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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.

A371393 Expansion of (1/x) * Series_Reversion( x * (1-x) / (1+3*x)^2 ).

Table of values

n a(n)
0 1
1 7
2 65
3 695
4 8081
5 99303
6 1268961
7 16694295
8 224617265
9 3076621127
10 42757939841
11 601443961207
12 8546453367505
13 122502619954855
14 1769134504184865
15 25716831677125335
16 375988660156913265
17 5525224188936386055
18 81565308431025658305
19 1209038650866275440695

List of values

[1, 7, 65, 695, 8081, 99303, 1268961, 16694295, 224617265, 3076621127, 42757939841, 601443961207, 8546453367505, 122502619954855, 1769134504184865, 25716831677125335, 375988660156913265, 5525224188936386055, 81565308431025658305, 1209038650866275440695]

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

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