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Search: id:A143127
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| 1, 5, 11, 23, 33, 57, 71, 103, 130, 170, 192, 264, 290, 346
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OFFSET
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1,2
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COMMENT
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Equals row sums of triangle A143310 [From Gary W. Adamson (qntmpkt(AT)yahoo.com), Aug 06 2008]
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FORMULA
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Sum {n=1..inf.} n*d(n), where n*d(n) = A038040 (1, 4, 6, 12, 10, 24,...). Row sums of triangle A110661.
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EXAMPLE
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a(3) = 11 = (1 + 4 + 6), where n*d(n) = (1, 4, 6, 12, 10, 24,...).
a(4) = 23 = (8 + 7 + 5 + 3), where (8, 7, 5, 3) = row 4 of triangle A110661.
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CROSSREFS
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Cf. A000005, A038040, A110661.
A143310 [From Gary W. Adamson (qntmpkt(AT)yahoo.com), Aug 06 2008]
Sequence in context: A152533 A161896 A167610 this_sequence A061769 A143125 A147081
Adjacent sequences: A143124 A143125 A143126 this_sequence A143128 A143129 A143130
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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), Jul 26 2008
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