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Search: id:A116946
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| A116946 |
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Closest semiprime to n-th semiprime S that is different from S (break ties by taking the smaller semiprime). |
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1
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| 6, 4, 10, 9, 15, 14, 22, 21, 26, 25, 34, 33, 34, 39, 38, 49, 51, 49, 57, 58, 57, 65, 62, 65, 77, 74, 85, 82, 85, 86, 85, 86, 93, 94, 93, 94, 111, 115, 118, 119, 118, 122, 121, 122, 133, 134, 133, 142, 141, 142, 146, 145, 158, 159, 158, 159, 169, 166, 178, 177, 185
(list; graph; listen)
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OFFSET
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1,1
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COMMENT
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Semiprime analogue of A051701 Closest prime to n-th prime p that is different from p (break ties by taking the smaller prime). Semiprimes are A001358 Products of two primes.
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EXAMPLE
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Closest semiprimes to 4,6,9,10,14,15,21 are 6,4,10,9,15,14,22.
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CROSSREFS
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Cf. A001358, A051701.
Sequence in context: A075450 A145979 A015906 this_sequence A141270 A040032 A006582
Adjacent sequences: A116943 A116944 A116945 this_sequence A116947 A116948 A116949
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KEYWORD
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easy,nonn
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AUTHOR
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Jonathan Vos Post (jvospost3(AT)gmail.com), Mar 25 2006
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