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.

A219424 Unchanging value maps: number of 4Xn binary arrays indicating the locations of corresponding elements unequal to no horizontal or antidiagonal neighbor in a random 0..2 4Xn array.

Table of values

n a(n)
1 1
2 65
3 436
4 3617
5 28154
6 218838
7 1709703
8 13384389
9 104853209
10 820979848
11 6427053212
12 50316786006
13 393951173336
14 3084409493138
15 24148717621856
16 189066773722441
17 1480260894360447
18 11589420628440440

List of values

[1, 65, 436, 3617, 28154, 218838, 1709703, 13384389, 104853209, 820979848, 6427053212, 50316786006, 393951173336, 3084409493138, 24148717621856, 189066773722441, 1480260894360447, 11589420628440440]

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

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