%I
%S 31,27650,8296414,3822509358,1954083613268,950842128976830,
%T 464444435832491663,229893908518453257427
%N Number of (n+1)X(4+1) arrays of permutations of 0..n*5+4 filled by rows with each element moved a city block distance of 1 or 2, and rows and columns in increasing lexicographic order.
%C Column 4 of A263586.
%e Some solutions for n=2
%e ..2..3..4..7.14....1..2..3..4.14....5..6..8.13.14....5..6.12.13.14
%e .10..0..5..6.13....7..0..5.13..8...10..0..1..3..4...10..0..8..9..3
%e .11..1..8.12..9...11.10..6..9.12...11..7..2..9.12...11..1..2..7..4
%Y Cf. A263586.
%K nonn
%O 1,1
%A _R. H. Hardin_, Oct 22 2015
|