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.

A285752 Number of 3 X n 0..1 arrays with the number of 1's horizontally, diagonally or antidiagonally adjacent to some 0 one less than the number of 0's adjacent to some 1.

Table of values

n a(n)
1 0
2 14
3 105
4 630
5 4850
6 31276
7 250592
8 1727836
9 13831303
10 99330350
11 789537708
12 5828000730
13 46064702150
14 346391183886
15 2727741658914
16 20778683750294
17 163289874109963
18 1255321900392396
19 9855914786067634
20 76271581305888386

List of values

[0, 14, 105, 630, 4850, 31276, 250592, 1727836, 13831303, 99330350, 789537708, 5828000730, 46064702150, 346391183886, 2727741658914, 20778683750294, 163289874109963, 1255321900392396, 9855914786067634, 76271581305888386]

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

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