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Search: id:A138016
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| 1, 2, 4, 6, 10, 14, 24, 34, 68, 102, 256, 410, 1284, 2158, 8072, 13986
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OFFSET
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1,2
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FORMULA
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Repeat each nonzero term of A003422 once, then take partial sums.
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EXAMPLE
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a(5) = 10 = sum of row 5 terms of triangle A138015: (1 + 2 + 4 + 2 + 1).
a(5) = 10 = (1 + 1 + 2 + 2 + 4) since A003422 starting (1, 2, 4, 10, 34, 154,...)then repeating each term = (1, 1, 2, 2, 4, 4, 10, 10,...). Take partial sums of the first 5 terms.
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CROSSREFS
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Cf. A003422, A138015.
Sequence in context: A048670 A077625 A027383 this_sequence A113118 A032417 A152415
Adjacent sequences: A138013 A138014 A138015 this_sequence A138017 A138018 A138019
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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), Feb 28 2008
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