A253118 Number of (n+2)X(7+2) nonnegative integer arrays with all values the knight distance from the upper left minus as much as 2, with successive minimum path knight move differences either 0 or +1, and any unreachable value zero.

113891, 2259097, 79249122, 1873418602, 32095583880, 638441329329, 13003501426084, 147806633033577, 2230834419429696, 14396665989796585, 192005351314663070, 697433605478869427, 7950834540377070980

Offset

1,1

Comments

Column 7 of A253119.

Links

R. H. Hardin, Table of n, a(n) for n = 1..80

Example

Some solutions for n=1:
..0..1..1..2..1..2..3..3..3....0..2..2..2..2..2..3..4..4
..2..3..0..1..2..2..2..2..3....3..3..1..2..3..3..3..2..4
..1..0..2..2..1..2..2..3..3....1..1..3..2..2..2..3..4..4
Knight distance matrix for n=1:
..0..3..2..3..2..3..4..5..4
..3..4..1..2..3..4..3..4..5
..2..1..4..3..2..3..4..5..4

Crossrefs

Sequence in context: A108387 A112009 A034633 * A138266 A175697 A023092

Adjacent sequences: A253115 A253116 A253117 * A253119 A253120 A253121

Keyword

nonn

Author

R. H. Hardin, Dec 27 2014

Status

approved