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A257059
Number of length n 1..(n+1) arrays with every leading partial sum divisible by 2 or 3
1
1, 4, 18, 81, 1024, 7353, 106056, 1249592, 22143847, 282475249, 8589934592, 133642251792, 3531308221901, 71789886480657, 2171807721018968, 45949729863572161, 2218611106740436992, 53241469411989452625
OFFSET
1,2
COMMENTS
Diagonal of A257062
LINKS
EXAMPLE
Some solutions for n=4
..3....4....2....2....3....3....4....4....4....2....2....3....4....2....3....4
..5....5....2....1....1....3....2....5....4....2....1....1....5....4....5....4
..2....5....2....5....2....3....2....3....1....5....5....4....5....2....4....4
..4....1....4....1....4....1....4....2....3....3....4....1....2....1....2....2
CROSSREFS
Sequence in context: A257060 A181610 A264927 * A194460 A356289 A100192
KEYWORD
nonn
AUTHOR
R. H. Hardin, Apr 15 2015
STATUS
approved