id:A045983 - OEIS Search Results

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Numbers n such that n consecutive integers starting at a(n) have same number of prime divisors.

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7

1, 2, 2, 2, 54, 91, 141, 141, 44360, 48919, 218972, 526095, 526095, 526095, 17233173, 127890362, 29138958036 (list; graph; listen)

	OFFSET	`1,2`
	COMMENT	`a(n) = smallest number k such that the n numbers from k through n+k-1 have the same number of prime divisors.`
	EXAMPLE	`a(5) = 54 as 54, 55, 56, 57, 58 all have 2 prime divisors.`
	CROSSREFS	`Cf. A075041, A075028, A075031.` `Sequence in context: A147975 A083148 A075042 this_sequence A102384 A125838 A066736` `Adjacent sequences: A045980 A045981 A045982 this_sequence A045984 A045985 A045986`
	KEYWORD	`nonn`
	AUTHOR	`David W. Wilson (davidwwilson(AT)comcast.net)`

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Last modified November 25 14:49 EST 2009. Contains 167514 sequences.