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A299303 Number of nX4 0..1 arrays with every element equal to 1, 2, 3, 5, 6 or 7 king-move adjacent elements, with upper left element zero. 1
2, 52, 223, 1024, 5360, 28374, 144040, 743640, 3857242, 19925599, 102977350, 532709362, 2754912665, 14246433006, 73680910336, 381067786735, 1970816457786, 10192855468940, 52716573704127, 272645676769182, 1410103205704342 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
COMMENTS
Column 4 of A299307.
LINKS
FORMULA
Empirical recurrence of order 68 (see link above)
EXAMPLE
Some solutions for n=5
..0..0..1..1. .0..0..0..0. .0..0..0..1. .0..1..1..1. .0..0..1..0
..0..0..1..1. .0..1..1..1. .1..0..1..1. .0..1..1..1. .1..1..0..1
..0..0..0..0. .0..1..1..1. .0..1..0..0. .1..0..1..1. .1..1..1..1
..0..0..0..1. .1..0..1..1. .1..0..0..0. .1..0..1..1. .1..1..1..0
..1..1..1..0. .1..0..1..1. .1..0..0..0. .1..0..1..1. .0..0..0..1
CROSSREFS
Cf. A299307.
Sequence in context: A298766 A299563 A298385 * A299461 A300104 A034311
KEYWORD
nonn
AUTHOR
R. H. Hardin, Feb 06 2018
STATUS
approved

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Last modified March 29 04:23 EDT 2024. Contains 371264 sequences. (Running on oeis4.)