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.

A198721 Number of nX6 0..6 arrays with values 0..6 introduced in row major order and no element equal to any horizontal or vertical neighbor.

Table of values

n a(n)
1 52
2 272410
3 5315840795
4 116492275674072
5 2572072097029554676
6 56817439251356046537693
7 1255145613308486512244031328
8 27727293796669883715931085888092
9 612520905593913038338760996059873808

List of values

[52, 272410, 5315840795, 116492275674072, 2572072097029554676, 56817439251356046537693, 1255145613308486512244031328, 27727293796669883715931085888092, 612520905593913038338760996059873808]

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

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