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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.

A295254 Expansion of e.g.f. csch(x)*(1 - sqrt(1 - 4*sinh(x)))/2.

Table of values

n a(n)
0 1
1 1
2 4
3 31
4 352
5 5341
6 101824
7 2341291
8 63092992
9 1950837241
10 68093599744
11 2648776394551
12 113633946898432
13 5330308817264341
14 271416230974603264
15 14910196369733535811
16 879003840976919068672
17 55354496206857969062641
18 3708594029795800700944384
19 263391744037123969891925071

List of values

[1, 1, 4, 31, 352, 5341, 101824, 2341291, 63092992, 1950837241, 68093599744, 2648776394551, 113633946898432, 5330308817264341, 271416230974603264, 14910196369733535811, 879003840976919068672, 55354496206857969062641, 3708594029795800700944384, 263391744037123969891925071]

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

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