id:A157942 - OEIS Search Results

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Numbers n divisible by the largest prime <= sqrt(n), A007917(A000196(n)).

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6

4, 6, 8, 9, 12, 15, 18, 21, 24, 25, 30, 35, 40, 45, 49, 56, 63, 70, 77, 84, 91, 98, 105, 112, 119, 121, 132, 143, 154, 165, 169, 182, 195, 208, 221, 234, 247, 260, 273, 286, 289, 306, 323, 340, 357, 361, 380, 399, 418, 437, 456, 475, 494, 513, 529, 552, 575, 598 (list; graph; listen)

	OFFSET	`1,1`
	COMMENT	`Includes squares of primes (A001248; exactly the cases where we have "=" in the definition) and products of pairs of consecutive primes (A006094) as subsequences.`
	PROGRAM	`(PARI) for( n=4, 999, n % precprime(sqrtint(n)) \| print1(n", "))`
	CROSSREFS	`Sequence in context: A100425 A130074 A067012 this_sequence A122786 A092630 A079142` `Adjacent sequences: A157939 A157940 A157941 this_sequence A157943 A157944 A157945`
	KEYWORD	`nonn`
	AUTHOR	`M. F. Hasler (MHasler(AT)univ-ag.fr), Mar 09 2009`

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Last modified December 10 12:37 EST 2009. Contains 170569 sequences.

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