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Search: id:A000430
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| A000430 |
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Primes and squares of primes. |
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+0
13
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| 2, 3, 4, 5, 7, 9, 11, 13, 17, 19, 23, 25, 29, 31, 37, 41, 43, 47, 49, 53, 59, 61, 67, 71, 73, 79, 83, 89, 97, 101, 103, 107, 109, 113, 121, 127, 131, 137, 139, 149, 151, 157, 163, 167, 169, 173, 179, 181, 191, 193, 197, 199, 211, 223
(list; graph; listen)
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OFFSET
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1,1
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COMMENT
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Also Smarandache impotent numbers: numbers n such that product of proper divisors is < n.
A084114(a(n)) = 0, see also A084110. - Reinhard Zumkeller (reinhard.zumkeller(AT)gmail.com), May 12 2003
1<d(n)<4. [From Juri-Stepan Gerasimov (2stepan(AT)rambler.ru), Oct 18 2009]
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REFERENCES
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F. Smarandache, Definitions solved and unsolved problems, conjectures and theorems in number theory and geometry, edited by M. Perez, Xiquan Publishing House 2000
F. Smarandache, Sequences of Numbers Involved in Unsolved Problems, Hexis, Phoenix, 2006.
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LINKS
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T. D. Noe, Table of n, a(n) for n=1..1000
M. L. Perez et al., eds., Smarandache Notions Journal
F. Smarandache, Definitions, Solved and Unsolved Problems, Conjectures, ...
F. Smarandache, Sequences of Numbers Involved in Unsolved Problems.
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CROSSREFS
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A000005. [From Juri-Stepan Gerasimov (2stepan(AT)rambler.ru), Oct 18 2009]
Sequence in context: A081998 A074583 A001092 this_sequence A166684 A067126 A008750
Adjacent sequences: A000427 A000428 A000429 this_sequence A000431 A000432 A000433
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KEYWORD
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nonn,easy,nice
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AUTHOR
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R. Muller
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