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.

A280670 Number of nX5 0..2 arrays with no element equal to more than one of its horizontal and antidiagonal neighbors and with new values introduced in order 0 sequentially upwards.

Table of values

n a(n)
1 30
2 1917
3 119440
4 7533245
5 474736149
6 29920114246
7 1885698283255
8 118845116023725
9 7490149091439288
10 472062591963218273
11 29751489321018113345
12 1875071509361980884750
13 118175366862571989996619

List of values

[30, 1917, 119440, 7533245, 474736149, 29920114246, 1885698283255, 118845116023725, 7490149091439288, 472062591963218273, 29751489321018113345, 1875071509361980884750, 118175366862571989996619]

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

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