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Search: id:A048058
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| 11, 13, 17, 23, 31, 41, 53, 67, 83, 101, 121, 143, 167, 193, 221, 251, 283, 317, 353, 391, 431, 473, 517, 563, 611, 661, 713, 767, 823, 881, 941, 1003, 1067, 1133, 1201, 1271, 1343, 1417, 1493, 1571, 1651, 1733, 1817, 1903, 1991, 2081
(list; graph; listen)
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OFFSET
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0,1
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COMMENT
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Except for the first term, a(n)=2*n+a(n-1), (with a(1)=13) [From Vincenzo Librandi (vincenzo.librandi(AT)tin.it), Oct 23 2009]
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FORMULA
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a(n)=2*n+a(n-1)-2 (with a(1)=11) [From Vincenzo Librandi (vincenzo.librandi(AT)tin.it), Nov 07 2009]
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EXAMPLE
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For n=2, a(2)=2*2+11-2=13; n=3, a(3)=2*3+13-2=17; n=4, a(4)=2*4+17-2=23 [From Vincenzo Librandi (vincenzo.librandi(AT)tin.it), Nov 07 2009]
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MAPLE
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with (combinat):seq(fibonacci(3, n)+n+10, n=0..45); - Zerinvary Lajos (zerinvarylajos(AT)yahoo.com), Jun 07 2008
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CROSSREFS
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Cf. A048059, A048097.
Cf. A002522.
Sequence in context: A078861 A106891 A106890 this_sequence A048059 A106076 A006489
Adjacent sequences: A048055 A048056 A048057 this_sequence A048059 A048060 A048061
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KEYWORD
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nonn,easy,new
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AUTHOR
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N. J. A. Sloane (njas(AT)research.att.com).
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