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Search: id:A051874
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| 0, 1, 22, 63, 124, 205, 306, 427, 568, 729, 910, 1111, 1332, 1573, 1834, 2115, 2416, 2737, 3078, 3439, 3820, 4221, 4642, 5083, 5544, 6025, 6526, 7047, 7588, 8149, 8730, 9331, 9952, 10593, 11254, 11935, 12636, 13357, 14098, 14859
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OFFSET
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0,3
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REFERENCES
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A. H. Beiler, Recreations in the Theory of Numbers, Dover, N.Y., 1964, p. 189.
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FORMULA
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a(n)=n(10n-9).
a[n]:=2*a[n-1]-a[n-2]+20. n>=0. a[0]:=0. a[1]:=1. - Zerinvary Lajos (zerinvarylajos(AT)yahoo.com), Feb 18 2008
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MAPLE
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a[0]:=0:a[1]:=1:for n from 2 to 50 do a[n]:=2*a[n-1]-a[n-2]+20 od: seq(a[n], n=0..39); - Zerinvary Lajos (zerinvarylajos(AT)yahoo.com), Feb 18 2008
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CROSSREFS
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Sequence in context: A019506 A044124 A044505 this_sequence A140390 A069178 A081929
Adjacent sequences: A051871 A051872 A051873 this_sequence A051875 A051876 A051877
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KEYWORD
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nonn
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AUTHOR
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njas, Dec 15 1999
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