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.

A102091 Number of perfect matchings in the C_{2n} X P_3 graph (C_{2n} is the cycle graph on 2n vertices and P_3 is the path graph on 3 vertices).

Table of values

n a(n)
1 12
2 32
3 108
4 392
5 1452
6 5408
7 20172
8 75272
9 280908
10 1048352
11 3912492
12 14601608
13 54493932
14 203374112
15 759002508
16 2832635912
17 10571541132
18 39453528608
19 147242573292
20 549516764552
21 2050824484908
22 7653781175072
23 28564300215372
24 106603419686408
25 397849378530252

List of values

[12, 32, 108, 392, 1452, 5408, 20172, 75272, 280908, 1048352, 3912492, 14601608, 54493932, 203374112, 759002508, 2832635912, 10571541132, 39453528608, 147242573292, 549516764552, 2050824484908, 7653781175072, 28564300215372, 106603419686408, 397849378530252]

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

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