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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.

A302235 Triangle T(n,k) of the numbers of k-matchings in the n-hypercube graph (0 <= k <= 2^(n-1)).

Table of values

n a(n)
1 1
2 1
3 1
4 4
5 2
6 1
7 12
8 42
9 44
10 9
11 1
12 32
13 400
14 2496
15 8256
16 14208
17 11648
18 3712
19 272
20 1
21 80
22 2840
23 59120
24 803580
25 7517264
26 49715240
27 235146480
28 795862790
29 1910146160
30 3190117800
31 3594554960
32 2605908220
33 1129177840
34 259084440
35 25108944
36 589185
37 1
38 192
39 17376
40 986240

List of values

[1, 1, 1, 4, 2, 1, 12, 42, 44, 9, 1, 32, 400, 2496, 8256, 14208, 11648, 3712, 272, 1, 80, 2840, 59120, 803580, 7517264, 49715240, 235146480, 795862790, 1910146160, 3190117800, 3594554960, 2605908220, 1129177840, 259084440, 25108944, 589185, 1, 192, 17376, 986240]

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

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