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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.

A069853 Numerators of coefficients of expansion of sinh(x)/sin(x) (even powers only).

Table of values

n a(n)
0 1
1 1
2 1
3 13
4 17
5 97
6 1247
7 4937
8 6673
9 1058467
10 1380290071
11 3216636877
12 536799743
13 8113510922983
14 448402165451
15 39917099698166381
16 841245146920202183
17 1449011221261558349
18 5272145758556532286373
19 59293985401199969565319
20 11617394997961948860617

List of values

[1, 1, 1, 13, 17, 97, 1247, 4937, 6673, 1058467, 1380290071, 3216636877, 536799743, 8113510922983, 448402165451, 39917099698166381, 841245146920202183, 1449011221261558349, 5272145758556532286373, 59293985401199969565319, 11617394997961948860617]

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

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