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.

A240275 Number of 5Xn 0..3 arrays with no element equal to zero plus the sum of elements to its left or one plus the sum of the elements above it or one plus the sum of the elements diagonally to its northwest, modulo 4.

Table of values

n a(n)
1 10
2 72
3 2000
4 49921
5 1363144
6 40760821
7 1277623744
8 41700264862
9 1401065174093
10 47967535279669
11 1662365159922179
12 58055815885463615
13 2037231165976598098
14 71699030982374305133
15 2527959942776102405087
16 89229063928826842973827

List of values

[10, 72, 2000, 49921, 1363144, 40760821, 1277623744, 41700264862, 1401065174093, 47967535279669, 1662365159922179, 58055815885463615, 2037231165976598098, 71699030982374305133, 2527959942776102405087, 89229063928826842973827]

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

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