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.

A208461 Number of n X n nonnegative integer arrays with new values 0 upwards introduced in row major order and no element equal to more than two of its immediate leftward or upward or right-upward antidiagonal neighbors.

Table of values

n a(n)
1 1
2 15
3 20746
4 10318694804
5 4585512913250157737
6 3787532222733253394267947322830
7 10658767342117292737413813034097966371526603430

List of values

[1, 15, 20746, 10318694804, 4585512913250157737, 3787532222733253394267947322830, 10658767342117292737413813034097966371526603430]

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

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