A212874 Number of nondecreasing sequences of 7 1..n integers with no element dividing the sequence sum

0, 0, 2, 12, 40, 122, 319, 722, 1503, 2872, 5159, 9087, 15030, 24441, 38349, 58701, 86682, 127439, 180934, 255292, 354781, 484863, 649910, 870659, 1146208, 1495708, 1935479, 2485685, 3146345, 3979502, 4964688, 6177498, 7637218, 9375304

Offset

1,3

Comments

Row 7 of A212868

Links

R. H. Hardin, Table of n, a(n) for n = 1..192

Example

Some solutions for n=8
..2....4....2....3....3....2....2....2....3....2....2....2....3....2....3....2
..3....5....3....7....4....3....3....2....4....3....2....4....3....2....3....2
..4....6....4....7....4....5....3....5....4....4....3....4....6....3....4....2
..4....6....6....7....5....7....3....5....6....4....4....6....7....3....7....5
..4....7....6....7....5....8....3....5....8....4....4....7....8....3....7....6
..4....7....8....7....6....8....3....6....8....6....6....8....8....4....7....6
..4....8....8....8....7....8....6....6....8....6....8....8....8....6....7....6

Crossrefs

Sequence in context: A118417 A069144 A013194 * A074447 A190064 A240122

Adjacent sequences: A212871 A212872 A212873 * A212875 A212876 A212877

Keyword

nonn

Author

R. H. Hardin May 29 2012

Status

approved