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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.

A215527 Number of nonintersecting (or self-avoiding) rook paths joining opposite poles of a sphere with n horizontal sectors and n vertical sectors (demarcated by longitudes and latitudes).

Table of values

n a(n)
1 1
2 8
3 441
4 23436
5 3274015
6 1279624470
7 1429940707685
8 4632832974994840
9 44016723796115276451
10 1236712122885961369684270
11 103348977536357696768748889161
12 25793194766828189243602379528079372
13 19283754194866506189223991782133012219131

List of values

[1, 8, 441, 23436, 3274015, 1279624470, 1429940707685, 4632832974994840, 44016723796115276451, 1236712122885961369684270, 103348977536357696768748889161, 25793194766828189243602379528079372, 19283754194866506189223991782133012219131]

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

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