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Search: id:A082112
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| 1, 15, 37, 67, 105, 151, 205, 267, 337, 415, 501, 595, 697, 807, 925, 1051, 1185, 1327, 1477, 1635, 1801, 1975, 2157, 2347, 2545, 2751, 2965, 3187, 3417, 3655, 3901, 4155, 4417, 4687, 4965, 5251, 5545, 5847, 6157, 6475, 6801, 7135, 7477, 7827, 8185, 8551
(list; graph; listen)
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OFFSET
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0,2
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FORMULA
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a(n)=4n^2+10n+1
a(n)=8*n+a(n-1)-2 (with a(1)=1) [From Vincenzo Librandi (vincenzo.librandi(AT)tin.it), Nov 09 2009]
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EXAMPLE
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For n=2, a(2)=8*2+1-2=15; n=3, a(3)=8*3+15-2=37; n=4, a(4)=8*4+37-2=67 [From Vincenzo Librandi (vincenzo.librandi(AT)tin.it), Nov 09 2009]
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CROSSREFS
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Cf. A082109, A082108.
Sequence in context: A067707 A166146 A118867 this_sequence A059605 A147221 A051461
Adjacent sequences: A082109 A082110 A082111 this_sequence A082113 A082114 A082115
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KEYWORD
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easy,nonn,new
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AUTHOR
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Paul Barry (pbarry(AT)wit.ie), Apr 04 2003
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