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.

A361548 Expansion of e.g.f. exp((x + x^2/2 + x^3/6)/(1-x)).

Table of values

n a(n)
0 1
1 1
2 4
3 20
4 126
5 966
6 8656
7 88544
8 1016380
9 12920156
10 179996816
11 2725070096
12 44521522024
13 780344770440
14 14599772973696
15 290311643773376
16 6112190642062096
17 135798496839920144
18 3174483084427144000
19 77872118431269176896
20 1999809157085214044896

List of values

[1, 1, 4, 20, 126, 966, 8656, 88544, 1016380, 12920156, 179996816, 2725070096, 44521522024, 780344770440, 14599772973696, 290311643773376, 6112190642062096, 135798496839920144, 3174483084427144000, 77872118431269176896, 1999809157085214044896]

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

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