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.

A198523 Number of nX3 0..4 arrays with values 0..4 introduced in row major order and each element equal to no more than two horizontal and vertical neighbors.

Table of values

n a(n)
1 5
2 193
3 16714
4 1877316
5 222590953
6 26670041125
7 3201911378187
8 384557171168810
9 46189600128813487
10 5547962760669962158
11 666383179391895903794
12 80041410904141273707361
13 9614030302463648373863365

List of values

[5, 193, 16714, 1877316, 222590953, 26670041125, 3201911378187, 384557171168810, 46189600128813487, 5547962760669962158, 666383179391895903794, 80041410904141273707361, 9614030302463648373863365]

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

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