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Search: id:A073616
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| A073616 |
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Consider Pascal's triangle A007318; a(n) = sum of the smallest divisors of terms of the n-th row which are greater than 1. |
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+0
1
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| 1, 2, 4, 8, 8, 16, 14, 32, 16, 20, 22, 48, 26, 56, 50, 52, 32, 64, 38, 76, 42, 48, 54, 136, 50, 64, 70, 68, 62, 124, 74, 156, 64, 68, 70, 88, 74, 148, 114, 112, 82, 168, 90, 200, 126, 108, 122, 292, 98, 112, 114, 124, 118, 244, 122, 144, 118, 128, 130, 352, 134, 276, 262
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OFFSET
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0,2
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EXAMPLE
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Fifth row of the Pascal's triangle is 1, 5, 10,10, 5, 1 and the corresponding smallest divisors are 1,5,2,2,5,1 with sum 16. Hence a(5) =16.
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CROSSREFS
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Sequence in context: A073043 A083542 A088244 this_sequence A076735 A132720 A029930
Adjacent sequences: A073613 A073614 A073615 this_sequence A073617 A073618 A073619
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KEYWORD
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nonn
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AUTHOR
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Amarnath Murthy (amarnath_murthy(AT)yahoo.com), Aug 07 2002
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EXTENSIONS
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More terms from Antonio G. Astudillo (afg_astudillo(AT)lycos.com), Mar 22 2003
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