A298923 Number of n X 7 0..1 arrays with every element equal to 1, 3, 5, 7 or 8 king-move adjacent elements, with upper left element zero.

0, 64, 8, 9, 17, 22, 31, 83, 92, 172, 309, 549, 923, 1830, 3021, 5580, 10091, 18344, 33025, 61470, 111014, 205198, 376471, 694579, 1277419, 2365958, 4360085, 8074209, 14929946, 27656016, 51194508, 94924809, 175864241, 326176032, 604808134

Offset

1,2

Comments

Column 7 of A298924.

Links

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

Example

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

Crossrefs

Cf. A298924.

Sequence in context: A371277 A288923 A123964 * A210114 A236179 A226044

Adjacent sequences: A298920 A298921 A298922 * A298924 A298925 A298926

Keyword

nonn

Author

R. H. Hardin, Jan 29 2018

Status

approved