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A083088
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First column of table A083087.
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5
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1, 2, 4, 6, 7, 9, 11, 12, 14, 16, 18, 19, 21, 23, 24, 26, 28, 30, 31, 33, 35, 36, 38, 40, 41, 43, 45, 47, 48, 50, 52, 53, 55, 57, 59, 60, 62, 64, 65, 67, 69, 70, 72, 74, 76, 77, 79, 81, 82, 84, 86, 88, 89, 91, 93, 94, 96, 98, 100, 101, 103, 105, 106, 108, 110, 111, 113, 115
(list; graph; refs; listen; history; internal format)
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OFFSET
| 0,2
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COMMENTS
| It appears that A188937 gives the positions of 0 in the zero-one sequence A188037; complement of A080754. [From Clark Kimberling, Mar 19 2011]
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FORMULA
| a(n) = floor(n*x/(x-1)) + 1, n>=0, where x=1+sqrt(2).
a(n) = floor(n/sqrt(2)) + n + 1.
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MATHEMATICA
| f[n_] := Floor[n/Sqrt@2 + n + 1]; Array[f, 68, 0]
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PROG
| (MAGMA) z:=70; x:=1+Sqrt(2); [ Floor(n*x/(x-1))+1: n in [0..z] ]; - Klaus Brockhaus, Jan 04 2011
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CROSSREFS
| Cf. A083087, A083044, A083047, A083050.
Cf. A080755. [From R. J. Mathar (mathar(AT)strw.leidenuniv.nl), Sep 17 2008]
Sequence in context: A039009 A032793 A195127 * A080755 A083089 A136617
Adjacent sequences: A083085 A083086 A083087 * A083089 A083090 A083091
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KEYWORD
| nonn
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AUTHOR
| Paul D. Hanna (pauldhanna(AT)juno.com), Apr 21 2003
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EXTENSIONS
| This entry formerly contained an erroneous comment, which was deleted by N. J. A. Sloane (njas(AT)research.att.com), Jan 30 2008
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