id:A061987 - OEIS Search Results

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A061987

Number of times n-th distinct value is repeated in sequence b(k) = 1 + b([k/2]) + b([k/3]) with b(0) = 0 i.e. in A061984; also number of times n-th distinct row is repeated in square array T(n,k) = T(n-1,k) + T(n-1,[k/2]) + T(n-1,[k/3]) with T(0,0) = 1 i.e. in A061980.

+0
12

1, 1, 1, 1, 2, 2, 1, 3, 4, 2, 6, 3, 5, 4, 12, 6, 10, 8, 9, 15, 12, 20, 16, 18, 30, 24, 27, 13, 32, 36, 60, 48, 54, 26, 64, 72, 81, 39, 96, 108, 52, 128, 144, 162, 78, 192, 216, 104, 139, 117, 288, 324, 156, 384, 432, 208, 278, 234, 576, 648, 312, 417, 351, 864, 416, 556 (list; graph; listen)

	OFFSET	`0,5`
	COMMENT	`For n>0: a(n)=A003586(n+1)-A003586(n) and a(A084791(n))=A084788(n).` `Also number of times A160519(n+1) is repeated in A088468. [From Reinhard Zumkeller (reinhard.zumkeller(AT)gmail.com), May 16 2009]`
	LINKS	`Eric Weisstein's World of Mathematics, Smooth Number`
	FORMULA	`a(n)=A061986(A061985(n)).`
	CROSSREFS	`Sequence in context: A080242 A035317 A103923 this_sequence A105809 A091594 A118032` `Adjacent sequences: A061984 A061985 A061986 this_sequence A061988 A061989 A061990`
	KEYWORD	`nonn`
	AUTHOR	`Henry Bottomley (se16(AT)btinternet.com), May 24 2001`
	EXTENSIONS	`More terms from Reinhard Zumkeller (reinhard.zumkeller(AT)gmail.com), Jun 03 2003`

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Last modified December 3 22:15 EST 2009. Contains 170310 sequences.

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