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A301404 Number of n X 5 0..1 arrays with every element equal to 0, 1, 2, 3, 4 or 5 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero. 1
16, 512, 15680, 483600, 14905344, 459428416, 14160945920, 436482419456, 13453684678656, 414682524038144, 12781747146699776, 393971413432651776, 12143369198333804544, 374294708852698746880, 11536874716313877610496 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
COMMENTS
Column 5 of A301407.
LINKS
FORMULA
Empirical: a(n) = 24*a(n-1) +204*a(n-2) +228*a(n-3) -1008*a(n-4) -1008*a(n-5) +2304*a(n-6) -192*a(n-7) -512*a(n-8) for n>9.
EXAMPLE
Some solutions for n=5
..0..0..0..0..0. .0..0..0..0..0. .0..0..0..0..0. .0..0..0..0..0
..0..0..0..0..0. .0..0..0..1..1. .0..0..0..1..1. .0..0..0..0..0
..0..1..1..0..1. .1..0..1..0..1. .1..0..1..1..0. .0..1..1..0..1
..1..1..0..1..1. .0..1..1..0..0. .0..0..1..1..0. .1..1..0..0..0
..0..0..1..1..1. .0..1..1..0..0. .1..1..0..1..1. .0..1..1..1..0
CROSSREFS
Cf. A301407.
Sequence in context: A300205 A213415 A303418 * A303424 A317514 A300179
KEYWORD
nonn
AUTHOR
R. H. Hardin, Mar 20 2018
STATUS
approved

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Last modified July 15 02:08 EDT 2024. Contains 374323 sequences. (Running on oeis4.)