A301826 - OEIS

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A301826

Number of 5 X n 0..1 arrays with every element equal to 1 or 2 horizontally or antidiagonally adjacent elements, with upper left element zero.

0, 34, 16, 177, 1197, 6501, 47363, 284691, 1896274, 11958940, 77618802, 496896121, 3200790736, 20562842467, 132258652196, 850233622346, 5467032295429, 35149594609278, 226000413555323, 1453078724543374, 9342715834996198

(list; graph; refs; listen; history; text; internal format)

OFFSET

1,2

COMMENTS

Row 5 of A301823.

LINKS

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

EXAMPLE

Some solutions for n=5

..0..0..0..1..0. .0..0..0..1..1. .0..0..0..0..0. .0..0..0..1..1

..1..1..1..0..0. .1..1..1..0..0. .1..1..1..1..0. .1..1..1..0..0

..0..0..1..0..0. .0..0..0..1..1. .0..0..1..0..0. .0..0..1..1..0

..0..1..1..1..1. .1..1..0..0..0. .0..0..1..1..1. .0..0..1..0..1

..0..0..0..1..1. .1..1..1..1..1. .1..1..0..0..0. .0..0..0..1..1

CROSSREFS

Cf. A301823.

Sequence in context: A298258 A298929 A118497 * A033354 A033972 A298086

Adjacent sequences: A301823 A301824 A301825 * A301827 A301828 A301829

KEYWORD

nonn

AUTHOR

R. H. Hardin, Mar 27 2018

STATUS

approved