id:A130851 - OEIS Search Results

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a(n) = digital root (A010888) of Catalan number A000108(n).

+0
2

1, 1, 2, 5, 5, 6, 6, 6, 8, 2, 2, 7, 4, 4, 0, 0, 0, 6, 6, 6, 3, 3, 3, 0, 0, 0, 8, 2, 2, 4, 1, 1, 3, 3, 3, 1, 7, 7, 2, 5, 5, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 6, 6, 6, 3, 3, 3, 0, 0, 0, 3, 3, 3, 6, 6, 6, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 8, 2, 2, 4, 1, 1, 3, 3, 3, 7, 4, 4, 5, 8, 8, 0, 0, 0, 3, 3, 3, 6, 6, 6, 0 (list; graph; listen)

	OFFSET	`0,3`
	COMMENT	`Catalan numbers read modulo 9. [From Philippe DELEHAM (kolotoko(AT)wanadoo.fr), Apr 28 2009]`
	FORMULA	`a(n)= A000108(n) mod 9 . [From Philippe DELEHAM (kolotoko(AT)wanadoo.fr), Apr 28 2009]`
	CROSSREFS	`Cf. A000108, A010888, A130856.` `Sequence in context: A082084 A094236 A073101 this_sequence A130856 A004095 A145434` `Adjacent sequences: A130848 A130849 A130850 this_sequence A130852 A130853 A130854`
	KEYWORD	`nonn,base`
	AUTHOR	`N. J. A. Sloane (njas(AT)research.att.com), Aug 21 2007`

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Last modified December 10 12:37 EST 2009. Contains 170569 sequences.

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