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Search: id:A133725
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| 1, 4, 11, 17, 34, 35, 69, 70, 105, 106, 175, 142, 246, 213, 284, 284, 424, 321, 531, 428, 570, 535, 781, 572, 890, 750, 963, 858, 1246, 860, 1425, 1144, 1430, 1288, 1716, 1290, 2034, 1611, 2004, 1720, 2500, 1722, 2751, 2150, 2580, 2365, 3289, 2296, 3507, 2690
(list; graph; listen)
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OFFSET
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1,2
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FORMULA
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Mobius transform of the pentagonal numbers.
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EXAMPLE
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a(4) = 17 = (0, -1, 0, 1) dot (1, 5, 12, 22) = (0, -5, 0, 22).
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MAPLE
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read("transforms") : A000326 := proc(n) n*(3*n-1)/2 ; end: a000326 := [seq(A000326(n), n=1..300)] ; a133725 := MOBIUS(a000326) ; for i from 1 to nops(a133725) do printf("%d, ", op(i, a133725)) ; od: [From R. J. Mathar (mathar(AT)strw.leidenuniv.nl), Jan 19 2009]
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CROSSREFS
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Cf. A000326, A054525.
Sequence in context: A063237 A026381 A063556 this_sequence A050395 A059771 A043409
Adjacent sequences: A133722 A133723 A133724 this_sequence A133726 A133727 A133728
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KEYWORD
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nonn
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AUTHOR
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Gary W. Adamson (qntmpkt(AT)yahoo.com), Sep 21 2007
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EXTENSIONS
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More terms from R. J. Mathar (mathar(AT)strw.leidenuniv.nl), Jan 19 2009
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