A302277 Number of n X 7 0..1 arrays with every element equal to 1, 2 or 4 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero.

8, 98, 363, 1621, 14125, 72083, 384916, 3027442, 17837758, 105323556, 739401390, 4650704407, 28941532526, 193466816941, 1245437720868, 7947521451749, 52140138010011, 338093540539006, 2181939290185486, 14220546200647229

Offset

1,1

Comments

Column 7 of A302278.

Links

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

Example

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

Crossrefs

Cf. A302278.

Sequence in context: A365845 A292747 A083182 * A302727 A116267 A183334

Adjacent sequences: A302274 A302275 A302276 * A302278 A302279 A302280

Keyword

nonn

Author

R. H. Hardin, Apr 04 2018

Status

approved