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This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.

A169717 1A coefficients in an expansion of the elliptic genus of the K3 surface.

Table of values

n a(n)
0 -1
1 45
2 231
3 770
4 2277
5 5796
6 13915
7 30843
8 65550
9 132825
10 260568
11 494385
12 915124
13 1651815
14 2922381
15 5069867
16 8650530
17 14525742
18 24053215
19 39299778
20 63447087
21 101268540
22 159963804
23 250188435
24 387746282
25 595726956
26 907877355
27 1372935090
28 2061208710
29 3073155810
30 4552039296
31 6700526910

List of values

[-1, 45, 231, 770, 2277, 5796, 13915, 30843, 65550, 132825, 260568, 494385, 915124, 1651815, 2922381, 5069867, 8650530, 14525742, 24053215, 39299778, 63447087, 101268540, 159963804, 250188435, 387746282, 595726956, 907877355, 1372935090, 2061208710, 3073155810, 4552039296, 6700526910]

Started in 1964 by Neil J. A. Sloane | Maintained by The OEIS Foundation Inc.

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