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A263378 Number of (n+1)X(4+1) 0..4 arrays with each row and column divisible by 9, read as a base-5 number with top and left being the most significant digits. 1

%I #4 Oct 16 2015 08:12:15

%S 31,6731,2332320,787486033,271477636708,94234480080401,

%T 32785038500076147,11408914805662871537,3970303184293507213506,

%U 1381662664358658502302495,480818286459067326489389236,167324733669324390798735322667

%N Number of (n+1)X(4+1) 0..4 arrays with each row and column divisible by 9, read as a base-5 number with top and left being the most significant digits.

%C Column 4 of A263382.

%H R. H. Hardin, <a href="/A263378/b263378.txt">Table of n, a(n) for n = 1..210</a>

%e Some solutions for n=2

%e ..3..1..0..1..2....3..3..1..0..2....0..2..4..2..0....0..3..0..0..3

%e ..3..0..3..2..2....1..4..0..1..4....1..0..3..4..0....0..4..3..3..4

%e ..0..2..3..1..3....1..4..2..4..2....4..4..2..2..0....0..4..3..3..4

%Y Cf. A263382.

%K nonn

%O 1,1

%A _R. H. Hardin_, Oct 16 2015

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Last modified March 28 14:38 EDT 2024. Contains 371254 sequences. (Running on oeis4.)