cp's OEIS Frontend

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.

A381284 Expansion of e.g.f. 1/(1 - sinh(3*x) / 3).

Table of values

n a(n)
0 1
1 1
2 2
3 15
4 96
5 741
6 7632
7 87795
8 1149696
9 17155881
10 282880512
11 5128464375
12 101592631296
13 2178698451021
14 50314379323392
15 1245198047833755
16 32868161979088896
17 921803465256094161
18 27373850876851126272
19 858044392807801699935
20 28311289100161039466496

List of values

[1, 1, 2, 15, 96, 741, 7632, 87795, 1149696, 17155881, 282880512, 5128464375, 101592631296, 2178698451021, 50314379323392, 1245198047833755, 32868161979088896, 921803465256094161, 27373850876851126272, 858044392807801699935, 28311289100161039466496]

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

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