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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.

A379251 G.f. A(x) satisfies A(x) = ( (1 + x*A(x))/(1 - x*A(x)^2) )^2.

Table of values

n a(n)
0 1
1 4
2 32
3 340
4 4144
5 54724
6 761712
7 11004500
8 163453472
9 2480507524
10 38292849280
11 599455647828
12 9493724671184
13 151835354054212
14 2448792546337360
15 39781755539153748
16 650386418008379200
17 10692713526634029316
18 176669496568313495520
19 2931998993134971532116
20 48854054306918652620912

List of values

[1, 4, 32, 340, 4144, 54724, 761712, 11004500, 163453472, 2480507524, 38292849280, 599455647828, 9493724671184, 151835354054212, 2448792546337360, 39781755539153748, 650386418008379200, 10692713526634029316, 176669496568313495520, 2931998993134971532116, 48854054306918652620912]

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

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