

A252907


Number of (n+2)X(3+2) 0..3 arrays with every consecutive three elements in every row and column having exactly 2 distinct values, in every diagonal 1 or 2 distinct values, in every antidiagonal 2 or 3 distinct values, and new values 0 upwards introduced in row major order


1



5567, 42647, 361750, 3321526, 31101826, 293166855, 2779386634, 26422127321, 251365182149, 2393376335753, 22799665288410, 217194895643722, 2069420807703495, 19719401115769839, 187896935466387368
(list;
graph;
refs;
listen;
history;
text;
internal format)




