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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.

A333903 Number of directed Hamiltonian paths in a 2*n X n grid starting at the upper left corner and finishing in the lower left corner.

Table of values

n a(n)
1 1
2 1
3 16
4 264
5 117852
6 43399371
7 443064195958
8 3575671586791915
9 831655228913958996424
10 147303585340262824414389642
11 774577888161337889995061257722609
12 3015734636186832309974653370241824509796
13 356606519352227259565296610082412177642016167446

List of values

[1, 1, 16, 264, 117852, 43399371, 443064195958, 3575671586791915, 831655228913958996424, 147303585340262824414389642, 774577888161337889995061257722609, 3015734636186832309974653370241824509796, 356606519352227259565296610082412177642016167446]

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

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