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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.

A277362 Self-convolution of a(n)/4^n gives factorials (A000142).

Table of values

n a(n)
0 1
1 2
2 14
3 164
4 2646
5 53852
6 1316364
7 37467080
8 1215510118
9 44249471916
10 1785942489700
11 79150848980216
12 3821494523507708
13 199668288426274968
14 11225643465179779544
15 675769562728962818448
16 43370783734391689628294
17 2956329387192674856638668

List of values

[1, 2, 14, 164, 2646, 53852, 1316364, 37467080, 1215510118, 44249471916, 1785942489700, 79150848980216, 3821494523507708, 199668288426274968, 11225643465179779544, 675769562728962818448, 43370783734391689628294, 2956329387192674856638668]

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

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