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Search: id:A057949
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| A057949 |
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Numbers with more than one factorization into S-primes. See A054520 and A057948 for definition. |
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+0
4
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| 441, 693, 1089, 1197, 1449, 1617, 1881, 1953, 2205, 2277, 2541, 2709, 2793, 2961, 3069, 3249, 3381, 3465, 3717, 3933, 3969, 4221, 4257, 4389, 4473, 4557, 4653, 4761, 4977, 5229, 5301, 5313, 5445, 5733, 5841, 5929, 5985, 6237, 6321, 6417, 6489, 6633
(list; graph; listen)
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OFFSET
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0,1
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EXAMPLE
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2205 is in S = {1,5,9, ... 4i+1, ...}, 2205 = 5*9*49 = 5*21^2; 5, 9, 21, and 49 are S-primes (A057948).
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CROSSREFS
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Cf. A054520, A057948, A057950.
Sequence in context: A072604 A061626 A124170 this_sequence A057950 A014793 A110996
Adjacent sequences: A057946 A057947 A057948 this_sequence A057950 A057951 A057952
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KEYWORD
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nonn
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AUTHOR
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Jud McCranie (j.mccranie(AT)comcast.net), Oct 14 2000
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