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A269825 Number of nX4 0..4 arrays with some element plus some horizontally, diagonally, antidiagonally or vertically adjacent neighbor totalling four exactly once. 1
240, 39784, 3200604, 240637408, 16644595392, 1109236460528, 71730749075588, 4544255355000752, 283289815771686692, 17440137572474977008, 1062799029214265825864, 64226079502012687928352 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
COMMENTS
Column 4 of A269829.
LINKS
FORMULA
Empirical recurrence of order 48 (see link above)
EXAMPLE
Some solutions for n=2
..3..4..1..1. .1..2..3..0. .2..4..4..2. .4..4..0..2. .0..1..1..4
..4..1..1..4. .2..0..3..2. .3..3..4..2. .4..1..1..1. .0..2..2..1
CROSSREFS
Cf. A269829.
Sequence in context: A110163 A323981 A258082 * A232843 A289636 A001943
KEYWORD
nonn
AUTHOR
R. H. Hardin, Mar 05 2016
STATUS
approved

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Last modified March 4 05:23 EST 2024. Contains 370522 sequences. (Running on oeis4.)