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.

A127783 G.f. satisfies: A(x) = 1 + x*A(x+x^2)^2.

Table of values

n a(n)
0 1
1 1
2 2
3 7
4 28
5 133
6 700
7 4039
8 25160
9 167637
10 1186482
11 8872752
12 69810994
13 575912978
14 4967058182
15 44675926159
16 418157494016
17 4065044047125
18 40973402647058
19 427535487044903
20 4611642948647118
21 51354908876927025

List of values

[1, 1, 2, 7, 28, 133, 700, 4039, 25160, 167637, 1186482, 8872752, 69810994, 575912978, 4967058182, 44675926159, 418157494016, 4065044047125, 40973402647058, 427535487044903, 4611642948647118, 51354908876927025]

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

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