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A109592
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Sequence and first differences include all even numbers exactly once and no odd numbers.
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0
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2, 6, 14, 24, 36, 52, 70, 90, 112, 138, 166, 196, 228, 262, 300, 340, 382, 426, 472, 520, 570, 624, 680, 738, 798, 860, 924, 990, 1058, 1130, 1204, 1280, 1358, 1438, 1520, 1604, 1690, 1778, 1870, 1964, 2060, 2158, 2258, 2360, 2464, 2570, 2678, 2788, 2902
(list; graph; refs; listen; history; internal format)
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OFFSET
| 1,1
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COMMENTS
| First differences = 2*A030124.
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REFERENCES
| E. Angelini, "Jeux de suites", in Dossier Pour La Science, pp. 32-35, Volume 59 (Jeux math'), April/June 2008, Paris.
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FORMULA
| a(n) = 2*A005228(n).
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CROSSREFS
| Cf. A005228, A030124.
Sequence in context: A016060 A032386 A074329 * A106353 A002703 A112853
Adjacent sequences: A109589 A109590 A109591 * A109593 A109594 A109595
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KEYWORD
| easy,nonn
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AUTHOR
| Eric Angelini (eric.angelini(AT)kntv.be), Aug 30 2005
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EXTENSIONS
| Edited, corrected and extended by Ray Chandler (rayjchandler(AT)sbcglobal.net), Sep 06 2005
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