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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.

A371407 Expansion of (1/x) * Series_Reversion( x / ( (1+x)^2 * (1+3*x)^2 ) ).

Table of values

n a(n)
0 1
1 8
2 86
3 1064
4 14289
5 202488
6 2980380
7 45122792
8 698214548
9 10993069856
10 175546104958
11 2836384141720
12 46285381498750
13 761735217877200
14 12628402069223160
15 210704642400488040
16 3535494883741420908
17 59621314428576557664
18 1009942893735988354296

List of values

[1, 8, 86, 1064, 14289, 202488, 2980380, 45122792, 698214548, 10993069856, 175546104958, 2836384141720, 46285381498750, 761735217877200, 12628402069223160, 210704642400488040, 3535494883741420908, 59621314428576557664, 1009942893735988354296]

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

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