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.

A187235 Number of ways to place n nonattacking semi-bishops on an n X n board.

Table of values

n a(n)
1 1
2 5
3 51
4 769
5 15345
6 381065
7 11323991
8 391861841
9 15476988033
10 687029386845
11 33861652925595
12 1834814222811361
13 108411291759763681
14 6936921762461326545
15 477881176664541171375
16 35264213540563039871265
17 2775185864375851234241985
18 232010235620834821000259765
19 20534530616200868936398461635

List of values

[1, 5, 51, 769, 15345, 381065, 11323991, 391861841, 15476988033, 687029386845, 33861652925595, 1834814222811361, 108411291759763681, 6936921762461326545, 477881176664541171375, 35264213540563039871265, 2775185864375851234241985, 232010235620834821000259765, 20534530616200868936398461635]

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

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