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Search: id:A124728
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| A124728 |
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Numbers n such that n, n+1, n+2 and n+3 are products of 4 primes. |
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+0
2
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| 4023, 7314, 9162, 12122, 12123, 16674, 19434, 19940, 23874, 24723, 29094, 33234, 35124, 35125, 39234, 42182, 42183, 44163, 45175, 46988, 49147, 51793, 52854, 52855, 54584, 54585, 54663, 58375, 63594, 64074, 64075, 64323, 64491, 64712
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OFFSET
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1,1
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COMMENT
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Subset of A045940 Numbers n such that factorizations of n through n+3 have same number of primes (including multiplicities). Cf. A124057, A124729 Numbers n such that n, n+1, n+2 and n+3 are products of exactly 3,5 primes. There are no numbers n such that n, n+1, n+2 and n+3 are products of exactly 6 primes(?)
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LINKS
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D. W. Wilson, Table of n, a(n) for n = 1..10000
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EXAMPLE
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4023=3^3*149, 4024=2^3*503, 4025=5^2*7*23, 4026=2*3*11*61 (all products of 4 primes).
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CROSSREFS
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Cf. A045940, A124057, A124729.
Adjacent sequences: A124725 A124726 A124727 this_sequence A124729 A124730 A124731
Sequence in context: A034306 A107285 A099229 this_sequence A034229 A060896 A001382
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KEYWORD
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nonn
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AUTHOR
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Zak Seidov (zakseidov(AT)yahoo.com), Nov 05 2006
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