id:A097699 - OEIS Search Results

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

+0
2

2, 3, 4, 6, 10, 15, 20, 21, 50, 105, 175, 196, 490, 887, 1176, 3490 (list; graph; listen)

	OFFSET	`1,1`
	COMMENT	`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.` `Sequence in context: A121152 A089223 A094861 this_sequence A086990 A090412 A073028` `Adjacent sequences: A097696 A097697 A097698 this_sequence A097700 A097701 A097702`
	KEYWORD	`nonn`
	AUTHOR	`John W. Layman (layman(AT)math.vt.edu), Aug 20 2004`

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Last modified November 25 20:09 EST 2009. Contains 167514 sequences.