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

Author

John W. Layman, Aug 20 2004

Keywords

• nonn
• more

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.

Crossrefs

Cf. A096827.