A180379 Number of increasing sequences of n integers x(1),...,x(n) with values in 1..2*n such that x(j) divides x(k) iff j divides k

2, 4, 8, 11, 19, 12, 22, 22, 10, 5, 13, 12, 21, 12, 11, 12, 24, 29, 60, 83, 56, 29, 61, 83, 56, 29, 29, 29, 62, 83, 171, 253, 164, 83, 83, 83, 146, 83, 83, 83, 173, 245, 497, 731, 488, 245, 497, 731, 731, 731, 731, 731, 1471, 2189, 2189, 2189, 1460, 731, 1473, 2189, 3659

Offset

1,1

Comments

Column 2 of A180378

Links

R. H. Hardin, Table of n, a(n) for n=1..99

Crossrefs

Sequence in context: A007295 A053439 A337501 * A033956 A282620 A320440

Adjacent sequences: A180376 A180377 A180378 * A180380 A180381 A180382

Keyword

nonn

Author

R. H. Hardin Sep 01 2010

Status

approved