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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.

A160240 Number of Greek-key tours on a 6 X n grid.

Table of values

n a(n)
1 1
2 6
3 78
4 469
5 3501
6 22144
7 144476
8 899432
9 5585508
10 34092855
11 206571444
12 1241016042
13 7407467656
14 43975776229
15 259779839242
16 1528563721468
17 8960651209082
18 52368047294410
19 305173796833144
20 1774059940879290
21 10289839706255591
22 59564855651625602
23 344177608427972004
24 1985502681113986836

List of values

[1, 6, 78, 469, 3501, 22144, 144476, 899432, 5585508, 34092855, 206571444, 1241016042, 7407467656, 43975776229, 259779839242, 1528563721468, 8960651209082, 52368047294410, 305173796833144, 1774059940879290, 10289839706255591, 59564855651625602, 344177608427972004, 1985502681113986836]

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

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