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Search: id:A117619
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| 7, 8, 11, 16, 23, 32, 43, 56, 71, 88, 107, 128, 151, 176, 203, 232, 263, 296, 331, 368, 407, 448, 491, 536, 583, 632, 683, 736, 791, 848, 907, 968, 1031, 1096, 1163, 1232, 1303, 1376, 1451, 1528, 1607, 1688, 1771, 1856, 1943, 2032, 2123, 2216, 2311, 2408
(list; graph; listen)
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OFFSET
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0,1
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FORMULA
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a(n)=2*n+a(n-1)-3 (with a(1)=7) [From Vincenzo Librandi (vincenzo.librandi(AT)tin.it), Nov 07 2009]
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EXAMPLE
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If n=1 then n^2 + 7 = 1^2 + 7 = 8 which is the second term.
For n=2, a(2)=2*2+7-3=8; n=3, a(3)=2*3+8-3=11; n=4, a(4)=2*4+11-3=16 [From Vincenzo Librandi (vincenzo.librandi(AT)tin.it), Nov 07 2009]
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MATHEMATICA
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Table[n^2 + 7, {n, 0, 60}] - Stefan Steinerberger (stefan.steinerberger(AT)gmail.com), Apr 08 2006
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PROGRAM
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(Other) sage: [lucas_number1(3, n, -7) for n in xrange(0, 50)] # [From Zerinvary Lajos (zerinvarylajos(AT)yahoo.com), May 16 2009]
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CROSSREFS
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Cf. A117951, A117950.
Sequence in context: A090385 A145826 A102963 this_sequence A098731 A105740 A050796
Adjacent sequences: A117616 A117617 A117618 this_sequence A117620 A117621 A117622
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KEYWORD
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nonn,less
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AUTHOR
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Parthasarathy Nambi (PachaNambi(AT)yahoo.com), Apr 07 2006
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EXTENSIONS
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More terms from Stefan Steinerberger (stefan.steinerberger(AT)gmail.com), Apr 08 2006
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