id:A073933 - OEIS Search Results

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

+0
5

1, 2, 3, 3, 4, 4, 5, 4, 5, 5, 6, 5, 6, 6, 6, 5, 6, 6, 7, 6, 7, 7, 8, 6, 7, 7, 7, 7, 8, 7, 8, 6, 8, 7, 8, 7, 8, 8, 8, 7, 8, 8, 9, 8, 8, 9, 10, 7, 9, 8, 8, 8, 9, 8, 9, 8, 9, 9, 10, 8, 9, 9, 9, 7, 9, 9, 10, 8, 10, 9, 10, 8, 9, 9, 9, 9, 10, 9, 10, 8, 9, 9, 10, 9, 9, 10, 10, 9, 10, 9, 10, 10, 10, 11, 10, 8 (list; graph; listen)

	OFFSET	`0,2`
	MAPLE	`a[1] := 1:for i from 2 to 500 do n := i:s := 1: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+1:od:a[i] := s:od:seq(a[k], k=1..500);`
	CROSSREFS	`Cf. A073932, A073934, A073935.` `Sequence in context: A064066 A060607 A061339 this_sequence A056792 A130500 A072073` `Adjacent sequences: A073930 A073931 A073932 this_sequence A073934 A073935 A073936`
	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 December 7 23:50 EST 2009. Contains 170430 sequences.

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