cp's OEIS Frontend

A253005 Number of n X n nonnegative integer arrays with upper left 0 and lower right its king-move distance away minus 3 and every value increasing by 0 or 1 with every step right, diagonally se or down.

%I A253005 #6 Jul 17 2015 17:43:30
%S A253005 0,0,0,1,250,54219,14697256,5713126349,3406380649146,3235013673306411,
%T A253005 5006915703789559516,12814921349279258614386,
%U A253005 54759970343589573849950696,393147238947490609962950665584,4762079888047633609309896734274288
%N A253005 Number of n X n nonnegative integer arrays with upper left 0 and lower right its king-move distance away minus 3 and every value increasing by 0 or 1 with every step right, diagonally se or down.
%C A253005 Diagonal of A253011.
%e A253005 Some solutions for n=6:
%e A253005 ..0..0..0..0..0..0....0..0..0..0..0..0....0..1..1..1..1..2....0..0..1..1..1..2
%e A253005 ..0..0..0..0..0..1....0..0..0..1..1..1....1..1..1..1..1..2....0..0..1..1..1..2
%e A253005 ..0..0..1..1..1..1....0..0..0..1..1..1....1..1..1..1..1..2....0..1..1..1..2..2
%e A253005 ..0..0..1..1..1..2....0..0..0..1..1..2....1..1..1..1..1..2....1..1..1..2..2..2
%e A253005 ..0..0..1..1..1..2....0..0..0..1..1..2....1..1..1..1..1..2....1..1..1..2..2..2
%e A253005 ..1..1..1..1..1..2....1..1..1..1..2..2....1..2..2..2..2..2....1..1..1..2..2..2
%K A253005 nonn
%O A253005 1,5
%A A253005 _R. H. Hardin_, Dec 25 2014