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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.

A371380 Expansion of (1/x) * Series_Reversion( x * (1-3*x)^2 / (1-x) ).

Table of values

n a(n)
0 1
1 5
2 46
3 521
4 6574
5 88658
6 1250920
7 18236849
8 272544886
9 4153080950
10 64284022516
11 1007929418570
12 15974993572732
13 255522850658564
14 4119461259700060
15 66869059171095809
16 1091990982773631910
17 17927521032225339854
18 295717190725184361364
19 4898634803627227516238

List of values

[1, 5, 46, 521, 6574, 88658, 1250920, 18236849, 272544886, 4153080950, 64284022516, 1007929418570, 15974993572732, 255522850658564, 4119461259700060, 66869059171095809, 1091990982773631910, 17927521032225339854, 295717190725184361364, 4898634803627227516238]

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

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