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A300608
Number of n X 4 0..1 arrays with every element equal to 1, 2, 3 or 5 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero.
1
2, 30, 277, 2347, 19532, 164619, 1387896, 11697909, 98591087, 830954473, 7003554684, 59028229212, 497509382092, 4193173792143, 35341458756838, 297869535158874, 2510543242339775, 21159691214336637, 178340896550028412
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OFFSET
1,1
COMMENTS
Column 4 of
A300612
.
LINKS
R. H. Hardin,
Table of n, a(n) for n = 1..210
R. H. Hardin,
Empirical recurrence of order 72
FORMULA
Empirical recurrence of order 72 (see link above).
EXAMPLE
Some solutions for n=5
..0..0..0..0. .0..0..1..1. .0..1..0..0. .0..0..1..0. .0..0..0..0
..1..1..0..1. .1..1..0..0. .0..1..0..1. .0..1..1..0. .1..1..1..1
..0..1..0..1. .0..1..0..1. .1..0..1..1. .1..0..0..1. .0..1..0..0
..0..0..1..0. .0..1..1..0. .0..1..0..1. .1..1..1..1. .0..0..1..0
..1..1..0..0. .0..0..1..0. .1..1..0..0. .1..0..0..1. .0..1..1..1
CROSSREFS
Cf.
A300612
.
Sequence in context:
A368498
A300423
A300685
*
A301350
A379557
A036351
Adjacent sequences:
A300605
A300606
A300607
*
A300609
A300610
A300611
KEYWORD
nonn
AUTHOR
R. H. Hardin
, Mar 09 2018
STATUS
approved
