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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.

A369507 Expansion of (1/x) * Series_Reversion( x / ((1+x)^3+x^3)^2 ).

Table of values

n a(n)
0 1
1 6
2 51
3 508
4 5535
5 63888
6 767689
7 9502254
8 120324606
9 1551362160
10 20296839585
11 268785905790
12 3595951246855
13 48528885742200
14 659856371680971
15 9031161933443468
16 124319953470044970
17 1720113658097639532
18 23908612149570793386
19 333680424238179500976

List of values

[1, 6, 51, 508, 5535, 63888, 767689, 9502254, 120324606, 1551362160, 20296839585, 268785905790, 3595951246855, 48528885742200, 659856371680971, 9031161933443468, 124319953470044970, 1720113658097639532, 23908612149570793386, 333680424238179500976]

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

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