I've come to a rare number

[le Redoutable]

this number I've had real difficulty to calculate
it is based to
1x2+2x3+3x4+4x5...+33x32 ===> 13290

( because I am particularly low in physics I won't ever find by myself
so, here you come !

 

[le Redoutable]

it comes from 11988+1122

 

[CleverNickName]

I think there might be an error in your math.

Your formula of 1x2+2x3+3x4+4x5...+33x32 can be expressed as:

Σ[(n)(n+1)] for n[1,32] = 11,968

If you carry the n out to 33 instead of 32, you get:

Σ[(n)(n+1)] for n[1,33] = 13,090, which is a bit closer to what you were looking for. (Don't know where the other 200 came from, though.)

 

[le Redoutable]

yeah! very good! so I can follow my track ( grmpf! errors de calcul! )

 

[le Redoutable]

23x22=506 not 526 ( ouf! )

 

[le Redoutable]

so here I add values until I exceed 11520, at which time I substract values up to dropping to 0 or less beforewhile I invert and re-add values ( this is very fun lol )

 

[le Redoutable]

in the Yi King there is something called " liberté d'expansion"
perhaps you must dépasser 11520 before " le retour "
and dropping below 0 before to invert - with +

2 2
6 8
12 20
20 40
30 70
42 112
56 168
72 240
90 330
110 440
132 572
156 728
182 910
210 1120
240 1360
272 1632
306 1938
342 2280
380 2660
420 3080
462 3542
506 4048
552 4600
600 5200
650 5850
702 6552
756 7308
812 8120
870 8990
930 9920
992 10912
-
1056 9856
1122 8734
1190 7544
1260 6284
1332 4952
1406 3546
1482 2064
1560 504
+
1640 2144
1722 3866
1806 5672
1892 7564
1980 9544
-
2070 7474
2162 5312
2256 3056
2352 704
+
2450 3154
2550 5704
2652 8356
2756 11112
-
2862 8250
2970 5280
3080 2200
+
3192 5392
3306 8698
-
3422 5276
3540 1736
+
3660 5396
3782 9178
-
3906 5272
4032 1240
+
4160 5400
4290 9690
-
4422 5268
4556 712
+
4692 5404
4830 10234
-
4970 5264
5112 152
+
5256 5408
5402 10810
-
5550 5260
+
5700 10960
-
5852 5108
+
6006 11114
-
6162 4952
+
6320 11272
-
6480 4792
+
6642 11434
-
6806 4628
+
6972 11600
ah! dead end!