A097699 Records in the numbers of antichains in the divisor lattice D(n) (A096827).

2, 3, 4, 6, 10, 15, 20, 21, 50, 105, 175, 196, 490, 887, 1176, 3490

Offset

1,1

Comments

The divisor lattice D(n) is the lattice of the divisors of the natural number n. This sequence counts the empty set as an antichain.

Links

Table of n, a(n) for n=1..16.

Crossrefs

Cf. A096827.

Sequence in context: A094861 A173473 A288807 * A086990 A090412 A073028

Adjacent sequences: A097696 A097697 A097698 * A097700 A097701 A097702

Keyword

nonn,more

Author

John W. Layman, Aug 20 2004

Status

approved