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Search: id:A027599
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| 6, 2, 4, 12, 26, 46, 72, 104, 142, 186, 236, 292, 354, 422, 496, 576, 662, 754, 852, 956, 1066, 1182, 1304, 1432, 1566, 1706, 1852, 2004, 2162, 2326, 2496, 2672, 2854, 3042, 3236, 3436, 3642, 3854, 4072, 4296, 4526, 4762, 5004, 5252, 5506
(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)=6*n+a(n-1)-10 (with a(1)=2) [From Vincenzo Librandi (vincenzo.librandi(AT)tin.it), Nov 17 2009]
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REFERENCES
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Encyclopaedia Britannica, 1965 ed., Vol. 16 pages 755/6.
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MATHEMATICA
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lst={}; Do[AppendTo[lst, 3*n^2-7*n+6], {n, 0, 4!}]; lst...and/or... s=2; lst={6, s}; Do[s+=n+1; AppendTo[lst, s], {n, 1, 5!, 6}]; lst [From Vladimir Orlovsky (4vladimir(AT)gmail.com), Oct 25 2008]
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CROSSREFS
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Cf. A049450.
Sequence in context: A135617 A019930 A123139 this_sequence A058160 A033939 A021020
Adjacent sequences: A027596 A027597 A027598 this_sequence A027600 A027601 A027602
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KEYWORD
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nonn,new
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AUTHOR
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Patrick De Geest (pdg(AT)worldofnumbers.com)
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