A180384 Number of increasing sequences of n integers x(1),...,x(n) with values in 1..2*n such that x(j) divides x(k) if j divides k

2, 4, 11, 15, 48, 48, 113, 89, 78, 42, 106, 174, 359, 224, 189, 173, 369, 515, 1047, 1562, 1428, 592, 1205, 2067, 2072, 894, 861, 862, 1751, 2613, 5255, 6994, 6266, 2460, 2461, 2462, 4959, 3587, 3588, 3589, 7217, 10806, 21653, 32459, 32460, 13912, 27869, 48261

Offset

1,1

Comments

Column 2 of A180383

Links

R. H. Hardin, Table of n, a(n) for n=1..95

Crossrefs

Sequence in context: A002382 A356478 A330856 * A023168 A134419 A342228

Adjacent sequences: A180381 A180382 A180383 * A180385 A180386 A180387

Keyword

nonn

Author

R. H. Hardin Sep 01 2010

Status

approved