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.

A285147 Number of n X 3 0..1 arrays with the number of 1's horizontally 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 1
2 14
3 113
4 786
5 5742
6 42176
7 314197
8 2359900
9 17852820
10 135811506
11 1037931930
12 7962744490
13 61286318733
14 473008466100
15 3659466705689
16 28371299519552
17 220366440810204
18 1714457590259554
19 13358188660727160
20 104218249427651818

List of values

[1, 14, 113, 786, 5742, 42176, 314197, 2359900, 17852820, 135811506, 1037931930, 7962744490, 61286318733, 473008466100, 3659466705689, 28371299519552, 220366440810204, 1714457590259554, 13358188660727160, 104218249427651818]

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

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