A257059 - OEIS

A257059

Number of length n 1..(n+1) arrays with every leading partial sum divisible by 2 or 3

1, 4, 18, 81, 1024, 7353, 106056, 1249592, 22143847, 282475249, 8589934592, 133642251792, 3531308221901, 71789886480657, 2171807721018968, 45949729863572161, 2218611106740436992, 53241469411989452625

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OFFSET

1,2

COMMENTS

Diagonal of A257062

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..93

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

Cf. A257062

Sequence in context: A257060 A181610 A264927 * A194460 A356289 A100192

Adjacent sequences: A257056 A257057 A257058 * A257060 A257061 A257062

KEYWORD

nonn

AUTHOR

R. H. Hardin, Apr 15 2015

STATUS

approved