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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.

A290603 Numerators in the expansion of the exponential generating function (1/2)*((1 + 3*x)/x)*(1 - (1 + 3*x)^(-4/3)).

Table of values

n a(n)
0 2
1 -1
2 14
3 -35
4 364
5 -14560
6 79040
7 -1521520
8 304304000
9 -852051200
10 24012352000
11 -2245154912000
12 25560225152000
13 -949379791360000
14 114305326879744000
15 -1643139073896320000
16 75777707878512640000
17 -33493746882302586880000
18 193911166160699187200000
19 -10684505255454525214720000
20 1862156630236360108851200000

List of values

[2, -1, 14, -35, 364, -14560, 79040, -1521520, 304304000, -852051200, 24012352000, -2245154912000, 25560225152000, -949379791360000, 114305326879744000, -1643139073896320000, 75777707878512640000, -33493746882302586880000, 193911166160699187200000, -10684505255454525214720000, 1862156630236360108851200000]

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

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