cp's OEIS Frontend

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.

A368973 Expansion of (1/x) * Series_Reversion( x * (1-x) * (1-x+x^2)^2 ).

Table of values

n a(n)
0 1
1 3
2 13
3 65
4 351
5 1989
6 11650
7 69903
8 427225
9 2649229
10 16622079
11 105310673
12 672687322
13 4327037010
14 28002409452
15 182179075689
16 1190778886791
17 7815755146095
18 51491064226095
19 340374137775879
20 2256891800364421
21 15006481967365535
22 100037043223408890

List of values

[1, 3, 13, 65, 351, 1989, 11650, 69903, 427225, 2649229, 16622079, 105310673, 672687322, 4327037010, 28002409452, 182179075689, 1190778886791, 7815755146095, 51491064226095, 340374137775879, 2256891800364421, 15006481967365535, 100037043223408890]

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

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