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A258633 Number of length 2 1..(n+1) arrays with every leading partial sum divisible by 2, 3, 5 or 7 1
2, 6, 12, 20, 28, 36, 46, 56, 67, 73, 88, 95, 113, 131, 151, 160, 186, 196, 224, 250, 278, 290, 323, 354, 389, 422, 460, 476, 520, 536, 579, 622, 667, 712, 762, 781, 831, 881, 935, 957, 1018, 1041, 1102, 1160, 1224, 1250, 1321, 1386, 1458, 1525, 1596, 1625, 1702 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Row 2 of A258631

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..210

EXAMPLE

Some solutions for n=8

..7....8....3....9....2....2....7....2....4....5....6....6....7....8....8....6

..9....8....3....6....5....7....7....6....3....2....3....6....1....7....2....1

CROSSREFS

Cf. A258631

Sequence in context: A270878 A120344 A031426 * A244362 A175967 A254949

Adjacent sequences:  A258630 A258631 A258632 * A258634 A258635 A258636

KEYWORD

nonn

AUTHOR

R. H. Hardin, Jun 06 2015

STATUS

approved

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Last modified April 22 16:32 EDT 2021. Contains 343177 sequences. (Running on oeis4.)