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.

A238115 Number of states arising in matrix method for enumerating Hamiltonian cycles on a 2n X 2n grid.

Table of values

n a(n)
1 1
2 6
3 32
4 182
5 1117
6 7280
7 49625
8 349998
9 2535077
10 18758264
11 141254654
12 1079364104
13 8350678169
14 65298467486
15 515349097712
16 4100346740510
17 32858696386765
18 265001681344568
19 2149447880547398
20 17524254766905368
21 143540915998174577
22 1180736721910617182

List of values

[1, 6, 32, 182, 1117, 7280, 49625, 349998, 2535077, 18758264, 141254654, 1079364104, 8350678169, 65298467486, 515349097712, 4100346740510, 32858696386765, 265001681344568, 2149447880547398, 17524254766905368, 143540915998174577, 1180736721910617182]

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

Content is available under The OEIS End-User License Agreement.