A180386 Number of increasing sequences of n integers x(1),...,x(n) with values in 1..4*n such that x(j) divides x(k) if j divides k.

4, 12, 69, 143, 1051, 1041, 6722, 8485, 15907, 8500, 71585, 72304, 374159, 192093, 132237, 83720, 495591, 405716, 2262354, 2347020, 1676501, 478044, 3315250, 5160917, 5831333, 1762619, 2192192, 1666381, 8506917, 12211917, 58000458

Offset

1,1

Comments

Column 4 of A180383

Links

R. H. Hardin, Table of n, a(n) for n=1..38

Crossrefs

Sequence in context: A369284 A385315 A358409 * A302434 A121771 A009621

Adjacent sequences: A180383 A180384 A180385 * A180387 A180388 A180389

Keyword

nonn

Author

R. H. Hardin, Sep 01 2010

Status

approved