A302276 Number of n X 6 0..1 arrays with every element equal to 1, 2 or 4 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero.

5, 45, 162, 649, 3621, 15862, 69601, 385242, 1809350, 8397586, 43630510, 211879132, 1010098204, 5093387513, 24992533872, 120955915176, 601661729016, 2960280723199, 14445754762414, 71411159890125, 351516742426348

Offset

1,1

Comments

Column 6 of A302278.

Links

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

Example

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

Crossrefs

Cf. A302278.

Sequence in context: A216767 A288320 A003185 * A302726 A201876 A351426

Adjacent sequences: A302273 A302274 A302275 * A302277 A302278 A302279

Keyword

nonn

Author

R. H. Hardin, Apr 04 2018

Status

approved