id:A073934 - OEIS Search Results

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Sum of terms in n-th row of triangle in A073932.

+0
5

1, 3, 6, 7, 12, 12, 19, 15, 21, 22, 33, 24, 37, 33, 37, 31, 48, 39, 58, 42, 54, 55, 78, 48, 67, 63, 66, 61, 90, 67, 98, 63, 88, 82, 96, 75, 112, 96, 102, 82, 123, 96, 139, 99, 112, 124, 171, 96, 145, 117, 133, 115, 168, 120, 154, 117, 153, 148, 207, 127, 188, 160 (list; graph; listen)

	OFFSET	`0,2`
	MAPLE	`a[1] := 1:for i from 2 to 500 do n := i:s := n:while(n>1) do if isprime(n) then r := n-1: else r := n-n/ifactors(n)[2][1][1]; fi; n := r:s := s+n:od:a[i] := s:od:seq(a[k], k=1..500);`
	CROSSREFS	`Cf. A073932, A073933, A073935.` `Sequence in context: A084125 A053478 A138037 this_sequence A092150 A028802 A141742` `Adjacent sequences: A073931 A073932 A073933 this_sequence A073935 A073936 A073937`
	KEYWORD	`nonn`
	AUTHOR	`Amarnath Murthy (amarnath_murthy(AT)yahoo.com), Aug 19 2002`
	EXTENSIONS	`More terms from Sascha Kurz (sascha.kurz(AT)uni-bayreuth.de), Aug 23 2002`

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Last modified November 25 20:09 EST 2009. Contains 167514 sequences.

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