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.

A053525 Expansion of e.g.f.: (1-x)/(2-exp(x)).

Table of values

n a(n)
0 1
1 0
2 1
3 4
4 23
5 166
6 1437
7 14512
8 167491
9 2174746
10 31374953
11 497909380
12 8619976719
13 161667969646
14 3265326093109
15 70663046421208
16 1631123626335707
17 40004637435452866
18 1038860856732399105
19 28476428717448349996
20 821656049857815980455

List of values

[1, 0, 1, 4, 23, 166, 1437, 14512, 167491, 2174746, 31374953, 497909380, 8619976719, 161667969646, 3265326093109, 70663046421208, 1631123626335707, 40004637435452866, 1038860856732399105, 28476428717448349996, 821656049857815980455]

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

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