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Search: id:A022269
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| 0, 6, 23, 51, 90, 140, 201, 273, 356, 450, 555, 671, 798, 936, 1085, 1245, 1416, 1598, 1791, 1995, 2210, 2436, 2673, 2921, 3180, 3450, 3731, 4023, 4326, 4640, 4965, 5301, 5648, 6006, 6375, 6755, 7146
(list; graph; listen)
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OFFSET
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0,2
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COMMENT
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Essentially identical to A026817. - R. J. Mathar, May 28 2008
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FORMULA
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a(n)=11*n+a(n-1)-16 (with a(1)=0) [From Vincenzo Librandi (vincenzo.librandi(AT)tin.it), Nov 12 2009]
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EXAMPLE
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For n=2, a(2)=11*2+0-16=6; n=3, a(3)=11*3+6-16=23; n=4, a(4)=11*4+23-16=51 [From Vincenzo Librandi (vincenzo.librandi(AT)tin.it), Nov 12 2009]
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MATHEMATICA
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s=0; lst={s}; Do[s+=n++ +6; AppendTo[lst, s], {n, 0, 7!, 11}]; lst [From Vladimir Orlovsky (4vladimir(AT)gmail.com), Nov 16 2008]
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CROSSREFS
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a(n) = A110449(n, 5) for n>4.
Sequence in context: A161446 A081097 A031293 this_sequence A026817 A162267 A009017
Adjacent sequences: A022266 A022267 A022268 this_sequence A022270 A022271 A022272
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KEYWORD
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nonn
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AUTHOR
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N. J. A. Sloane (njas(AT)research.att.com).
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