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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.

A301436 G.f. A(x) satisfies: 1 = Sum_{n>=0} ( 2*(1+x)^n - A(x) )^n / 2^(n+1).

Table of values

n a(n)
0 1
1 6
2 50
3 1582
4 82722
5 5842550
6 511261682
7 52903385886
8 6290859281538
9 843328959011622
10 125706002934030898
11 20617322695573745742
12 3689811206934015405474
13 715633021826704924420758
14 149544785675949258192968178
15 33502338836970792659941911358
16 8011296279710787237594088464898
17 2036927238948023349890031708437830
18 548778491694092921577420334962662962
19 156179940994829385561873698156273034606

List of values

[1, 6, 50, 1582, 82722, 5842550, 511261682, 52903385886, 6290859281538, 843328959011622, 125706002934030898, 20617322695573745742, 3689811206934015405474, 715633021826704924420758, 149544785675949258192968178, 33502338836970792659941911358, 8011296279710787237594088464898, 2036927238948023349890031708437830, 548778491694092921577420334962662962, 156179940994829385561873698156273034606]

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

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