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.

A357667 Expansion of e.g.f. cosh( 3 * (exp(x) - 1) ).

Table of values

n a(n)
0 1
1 0
2 9
3 27
4 144
5 945
6 6273
7 44226
8 339399
9 2796795
10 24387786
11 223853355
12 2159078445
13 21827316888
14 230536050165
15 2536213188519
16 28994911890048
17 343806474384045
18 4220933769308205
19 53566838971016418
20 701650841036287275
21 9473067208871584407

List of values

[1, 0, 9, 27, 144, 945, 6273, 44226, 339399, 2796795, 24387786, 223853355, 2159078445, 21827316888, 230536050165, 2536213188519, 28994911890048, 343806474384045, 4220933769308205, 53566838971016418, 701650841036287275, 9473067208871584407]

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

Content is available under The OEIS End-User License Agreement.