login
A296642
Number of nX7 0..1 arrays with each 1 horizontally, vertically or antidiagonally adjacent to 1, 2 or 4 neighboring 1s.
1
37, 2728, 89613, 3713779, 157255466, 6468185511, 267838310277, 11100574753607, 459672982178410, 19037726114800043, 788497459189867140, 32656946891818303362, 1352543183239264781440, 56018002075733378064056
OFFSET
1,1
COMMENTS
Column 7 of A296643.
LINKS
EXAMPLE
Some solutions for n=3
..1..1..1..0..0..1..0. .1..1..0..0..0..0..1. .0..0..0..0..0..1..1
..0..0..1..0..1..0..1. .0..0..0..1..0..0..1. .0..1..0..1..0..1..0
..0..1..0..0..1..1..0. .0..0..1..1..0..0..0. .0..1..1..0..1..1..0
CROSSREFS
Cf. A296643.
Sequence in context: A297719 A296738 A296385 * A295039 A295530 A174750
KEYWORD
nonn
AUTHOR
R. H. Hardin, Dec 17 2017
STATUS
approved