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Search: id:A129189
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| A129189 |
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n-th prime + n-th composite - n. |
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+0
1
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| 5, 7, 10, 12, 16, 19, 24, 26, 30, 37, 40, 46, 50, 53, 57, 63, 69, 71, 78, 83, 85, 91, 95, 101, 110, 114, 116, 121, 124, 128, 142, 147, 153, 155, 165, 167, 174, 180, 184, 190, 196, 199, 210, 212, 216, 218, 230, 243, 247, 249, 254, 261, 263, 273, 279, 285, 292, 294
(list; graph; listen)
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OFFSET
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1,1
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EXAMPLE
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n(1)=2+4-1, n(2)=3+6-2, n(3)=5+8-3, n(4)=7+9-4, n(5)=11+10-5
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MAPLE
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c:=proc(n) if isprime(n)=false then n else fi end: C:=[seq(c(n), n=2..100)]: a:=n->ithprime(n)+C[n]-n: seq(a(n), n=1..74); - Emeric Deutsch (deutsch(AT)duke.poly.edu), Apr 16 2007
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CROSSREFS
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Sequence in context: A129415 A075275 A123122 this_sequence A066513 A028810 A097700
Adjacent sequences: A129186 A129187 A129188 this_sequence A129190 A129191 A129192
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KEYWORD
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nonn
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AUTHOR
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Edwin F. Sampang (efs_files(AT)yahoo.com), Apr 01 2007
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EXTENSIONS
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More terms from Emeric Deutsch (deutsch(AT)duke.poly.edu), Apr 16 2007
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