A180383 T(n,k)=number of increasing sequences of n integers x(1),...,x(n) with values in 1..k*n such that x(j) divides x(k) if j divides k

1, 2, 1, 3, 4, 1, 4, 8, 11, 1, 5, 12, 32, 15, 1, 6, 17, 69, 66, 48, 1, 7, 23, 114, 143, 310, 48, 1, 8, 27, 179, 268, 1051, 228, 113, 1, 9, 34, 252, 473, 2585, 1041, 1286, 89, 1, 10, 40, 347, 671, 5297, 2453, 6722, 1857, 78, 1, 11, 46, 441, 974, 9492, 5235, 23133, 8485, 1679, 42

Offset

1,2

Comments

Table starts

1 2 3 4 5 6 7 8 9 10

1 4 8 12 17 23 27 34 40

1 11 32 69 114 179 252 347

1 15 66 143 268 473 671

1 48 310 1051 2585 5297

1 48 228 1041 2453

1 113 1286 6722

1 89 1857

1 78

1

Links

R. H. Hardin, Table of n, a(n) for n=1..370

Crossrefs

Sequence in context: A283054 A247358 A297224 * A374896 A133807 A325001

Adjacent sequences: A180380 A180381 A180382 * A180384 A180385 A180386

Keyword

nonn,tabl

Author

R. H. Hardin Sep 01 2010

Status

approved