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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.

A204062 Expansion of g.f.: exp( Sum_{n>=1} A002203(n)^2 * x^n/n ) where A002203 are the companion Pell numbers.

Table of values

n a(n)
0 1
1 4
2 26
3 148
4 867
5 5048
6 29428
7 171512
8 999653
9 5826396
10 33958734
11 197925996
12 1153597255
13 6723657520
14 39188347880
15 228406429744
16 1331250230601
17 7759094953844
18 45223319492482
19 263580822001028
20 1536261612513707
21 8953988853081192
22 52187671505973468

List of values

[1, 4, 26, 148, 867, 5048, 29428, 171512, 999653, 5826396, 33958734, 197925996, 1153597255, 6723657520, 39188347880, 228406429744, 1331250230601, 7759094953844, 45223319492482, 263580822001028, 1536261612513707, 8953988853081192, 52187671505973468]

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

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