A180378 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) iff j divides k

1, 2, 1, 3, 4, 1, 4, 8, 8, 1, 5, 12, 25, 11, 1, 6, 17, 53, 45, 19, 1, 7, 23, 94, 101, 136, 12, 1, 8, 27, 146, 188, 471, 57, 22, 1, 9, 34, 210, 333, 1229, 214, 190, 22, 1, 10, 40, 288, 479, 2517, 585, 803, 260, 10, 1, 11, 46, 376, 701, 4859, 1055, 2997, 1037, 233, 5, 1, 12, 52

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 8 25 53 94 146 210 288

1 11 45 101 188 333 479

1 19 136 471 1229 2517

1 12 57 214 585

1 22 190 803

1 22 260

1 10

1

Links

R. H. Hardin, Table of n, a(n) for n=1..512

Crossrefs

Sequence in context: A188236 A181851 A210231 * A208341 A201634 A210211

Adjacent sequences: A180375 A180376 A180377 * A180379 A180380 A180381

Keyword

nonn,tabl

Author

R. H. Hardin Sep 01 2010

Status

approved