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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.

A263128 Number of (4+3) X (n+3) 0..1 arrays with each row divisible by 15 and column not divisible by 15, read as a binary number with top and left being the most significant bits.

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%I A263128 #5 May 27 2024 09:04:13
%S A263128 119,1708,56288,3049840,344322375,33563774112,3600054345088,
%T A263128 406348635796752
%N A263128 Number of (4+3) X (n+3) 0..1 arrays with each row divisible by 15 and column not divisible by 15, read as a binary number with top and left being the most significant bits.
%C A263128 Row 4 of A263124.
%e A263128 Some solutions for n=3
%e A263128 ..0..1..1..1..1..0....1..1..1..1..0..0....1..1..1..1..0..0....1..0..1..1..0..1
%e A263128 ..0..0..0..0..0..0....1..1..1..1..0..0....1..0..1..1..0..1....0..0..1..1..1..1
%e A263128 ..1..0..1..1..0..1....0..0..1..1..1..1....0..0..0..0..0..0....0..0..0..0..0..0
%e A263128 ..0..0..1..1..1..1....0..0..0..0..0..0....1..0..1..1..0..1....1..0..1..1..0..1
%e A263128 ..0..1..1..1..1..0....1..0..1..1..0..1....1..1..1..1..0..0....1..0..1..1..0..1
%e A263128 ..0..0..0..0..0..0....1..1..1..1..0..0....1..0..1..1..0..1....0..0..0..0..0..0
%e A263128 ..0..0..1..1..1..1....1..0..1..1..0..1....0..1..1..1..1..0....1..1..1..1..0..0
%Y A263128 Cf. A263124.
%K A263128 nonn
%O A263128 1,1
%A A263128 _R. H. Hardin_, Oct 10 2015

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