A299510 Number of n X 4 0..1 arrays with every element equal to 1, 2, 4, 5, 6 or 8 king-move adjacent elements, with upper left element zero.

2, 13, 29, 112, 439, 1950, 7702, 30277, 126429, 518642, 2100761, 8578886, 35145230, 143528336, 585829218, 2394199252, 9784418458, 39968678821, 163285521413, 667170458474, 2725830500324, 11136404253818, 45499237305554

Offset

1,1

Comments

Column 4 of A299514.

Links

R. H. Hardin, Table of n, a(n) for n = 1..210

R. H. Hardin, Empirical recurrence of order 68

Formula

Empirical recurrence of order 68 (see link above).

Example

Some solutions for n=5
..0..1..1..0. .0..0..0..1. .0..1..1..1. .0..1..1..0. .0..1..1..0
..0..0..0..1. .1..1..1..1. .0..0..0..0. .0..0..0..0. .0..0..0..1
..0..0..0..1. .0..1..1..1. .0..0..0..1. .0..0..0..0. .0..0..0..1
..0..0..0..0. .0..1..1..1. .0..0..0..1. .0..0..0..0. .0..0..0..1
..0..1..1..1. .1..0..0..1. .0..1..1..0. .0..1..1..0. .0..1..1..0

Crossrefs

Cf. A299514.

Sequence in context: A253970 A361836 A298392 * A299310 A300111 A030452

Adjacent sequences: A299507 A299508 A299509 * A299511 A299512 A299513

Keyword

nonn

Author

R. H. Hardin, Feb 11 2018

Status

approved