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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
OFFSET
1,1
COMMENTS
Row 2 of A258631
LINKS
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
Sequence in context: A270878 A120344 A031426 * A244362 A175967 A254949
KEYWORD
nonn
AUTHOR
R. H. Hardin, Jun 06 2015
STATUS
approved