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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.

A249927 G.f. A(x) satisfies: 1+x = 2*A(x)^3 - A(x)^5.

Table of values

n a(n)
0 1
1 1
2 4
3 40
4 485
5 6585
6 95732
7 1457636
8 22947585
9 370494965
10 6101028934
11 102074877086
12 1730213141683
13 29649526507055
14 512810063004600
15 8940267160930408
16 156944360941491106
17 2771866193105829798
18 49218079130561578390
19 878107603236732844610
20 15733529061871743649380

List of values

[1, 1, 4, 40, 485, 6585, 95732, 1457636, 22947585, 370494965, 6101028934, 102074877086, 1730213141683, 29649526507055, 512810063004600, 8940267160930408, 156944360941491106, 2771866193105829798, 49218079130561578390, 878107603236732844610, 15733529061871743649380]

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

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