id:A143671 - OEIS Search Results

Search: id:A143671

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Number of terms in A144688 of length n.

+0
2

10, 45, 150, 375, 750, 1200, 1713, 2227, 2492, 2492, 2225, 2041, 1575, 1132, 770, 571, 335, 180, 90, 44, 18, 12, 6, 3, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 (list; graph; listen)

	OFFSET	`1,1`
	COMMENT	`Since any 5-digit member of A144688 must end in 0 or 5, a(5) = 2a(4).` `Similarly a(n) <= 2a(n-1) for n = 6, 7, 8, 9, a(10) = a(9), and a(n) <= a(n-1) for n >= 11.` `a(n) = 0 for n > 25.`
	CROSSREFS	`Sequence in context: A037270 A027800 A005714 this_sequence A141499 A061772 A032165` `Adjacent sequences: A143668 A143669 A143670 this_sequence A143672 A143673 A143674`
	KEYWORD	`nonn,base`
	AUTHOR	`Zak Seidov and N. J. A. Sloane (njas(AT)research.att.com), Feb 08 2009`

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Last modified November 30 13:13 EST 2009. Contains 167758 sequences.

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