A229431 Number of n X n 0..6 arrays of the sum of the corresponding element, the element to the east and the element to the south in a larger (n+1)X(n+1) 0..2 array

7, 1213, 2985887, 74760946845, 15371734909895599, 26247877098036804502973

Offset

1,1

Comments

Diagonal of A229437

Links

Table of n, a(n) for n=1..6.

Example

Some solutions for n=2
..4..0....3..2....1..2....3..0....3..4....5..3....0..2....4..3....1..4....3..2
..3..0....4..1....0..2....4..4....5..6....2..3....1..3....0..0....5..6....5..4

Crossrefs

Sequence in context: A203871 A144927 A202133 * A159994 A278178 A190266

Adjacent sequences: A229428 A229429 A229430 * A229432 A229433 A229434

Keyword

nonn

Author

R. H. Hardin Sep 23 2013

Status

approved