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.

A240517 Number of nX6 0..1 arrays with no element equal to exactly two horizontal and vertical neighbors, with new values 0..1 introduced in row major order.

Table of values

n a(n)
1 13
2 42
3 196
4 1080
5 6205
6 37624
7 231665
8 1440880
9 9082172
10 57688194
11 368247913
12 2360899744
13 15185317117
14 97900171826
15 632299574804
16 4089240246144
17 26472263944273
18 171499150683304
19 1111664911286921
20 7208828328348392

List of values

[13, 42, 196, 1080, 6205, 37624, 231665, 1440880, 9082172, 57688194, 368247913, 2360899744, 15185317117, 97900171826, 632299574804, 4089240246144, 26472263944273, 171499150683304, 1111664911286921, 7208828328348392]

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

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