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.

A240270 Number of nX6 0..3 arrays with no element equal to zero plus the sum of elements to its left or one plus the sum of elements above it or one plus the sum of the elements diagonally to its northwest, modulo 4.

Table of values

n a(n)
1 132
2 3263
3 64721
4 2059061
5 40760821
6 1063706501
7 27923918285
8 576407548906
9 15326042676144
10 369518944004863
11 8336460134026971
12 218307022801923486
13 5056252479593806048
14 120075470956639787034
15 3035930439648129383298

List of values

[132, 3263, 64721, 2059061, 40760821, 1063706501, 27923918285, 576407548906, 15326042676144, 369518944004863, 8336460134026971, 218307022801923486, 5056252479593806048, 120075470956639787034, 3035930439648129383298]

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

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