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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.

A102090 Number of matchings in the C_n X P_3 graph (C_n is the cycle graph on n vertices and P_3 is the path graph on 3 vertices).

Table of values

n a(n)
2 47
3 228
4 1511
5 9213
6 57536
7 356863
8 2217871
9 13775700
10 85579087
11 531616825
12 3302453192
13 20515048427
14 127440964999
15 791672146068
16 4917923140383
17 30550483740725
18 189781751728736
19 1178937572877255
20 7323643025265351

List of values

[47, 228, 1511, 9213, 57536, 356863, 2217871, 13775700, 85579087, 531616825, 3302453192, 20515048427, 127440964999, 791672146068, 4917923140383, 30550483740725, 189781751728736, 1178937572877255, 7323643025265351]

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

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