login
A300882
Number of n X n 0..1 arrays with every element equal to 0, 1, 3, 4 or 5 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero.
0
1, 3, 4, 40, 808, 47487, 6236246, 1923849671, 1369615742014, 2343154648689254
OFFSET
1,2
COMMENTS
Diagonal of A300888.
EXAMPLE
Some solutions for n=5:
0 1 1 1 1 0 1 1 1 1 0 1 1 1 1 0 1 0 0 1
1 1 1 0 0 1 1 0 1 1 1 1 1 0 0 0 0 0 0 0
1 0 0 0 0 1 1 0 1 1 1 0 0 0 0 0 0 1 0 0
1 1 1 1 0 1 1 1 1 0 1 1 1 0 0 0 0 0 0 1
1 1 1 1 1 0 1 1 1 1 1 1 1 1 0 1 1 0 0 0
CROSSREFS
Cf. A300888.
Sequence in context: A167760 A012472 A012876 * A348225 A172144 A032837
KEYWORD
nonn,more
AUTHOR
R. H. Hardin, Mar 14 2018
STATUS
approved