A302083 Number of 4 X n 0..1 arrays with every element equal to 0, 1, 3 or 4 horizontally or antidiagonally adjacent elements, with upper left element zero.

8, 34, 115, 265, 692, 2838, 10526, 36080, 126064, 451725, 1619838, 5790181, 20746320, 74543378, 267962891, 963182733, 3463443128, 12458351250, 44819027270, 161244816456, 580146524964, 2087429956513, 7510987009954, 27026415468149, 97249016259452, 349933721272298

Offset

1,1

Links

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

R. H. Hardin, Empirical recurrence of order 92

Formula

Empirical recurrence of order 92 (see link above).

Example

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

Crossrefs

Row 4 of A302081.

Sequence in context: A196284 A196334 A294844 * A124843 A082840 A390115

Adjacent sequences: A302080 A302081 A302082 * A302084 A302085 A302086

Keyword

nonn

Author

R. H. Hardin, Mar 31 2018

Status

approved