A302278 -id:A302278 - cp's OEIS frontend

A302284 Number of 7 X n 0..1 arrays with every element equal to 1, 2 or 4 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero.

0, 421, 3401, 3316, 14639, 69601, 384916, 1354563, 4386347, 20677591, 97720565, 380885387, 1475260386, 6221755468, 27340927933, 112702562636, 453867039251, 1891967304535, 8027410092863, 33418076358717, 137512996312519

Offset: 1

R. H. Hardin, Apr 04 2018

nonn

Row 7 of A302278.

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

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

Cf. A302278.

A302272 Number of n X n 0..1 arrays with every element equal to 1, 2 or 4 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero.

Original entry on oeis.org

0, 3, 22, 89, 1219, 15862, 384916, 11370253, 325745362, 20953111994

Offset: 1

R. H. Hardin, Apr 04 2018

nonn

Diagonal of A302278.

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

Cf. A302278.

cp's OEIS Frontend

A302284 Number of 7 X n 0..1 arrays with every element equal to 1, 2 or 4 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero.

Views

Author

Keywords

Comments

Examples

Links

Crossrefs