id:A125910 - OEIS Search Results

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a(n) is the number of nonnegative integers k less than 10^n such that the decimal representation of k lacks the digit 1, at least one of digits 2,3,4 and at least one of digits 5,6,7,8,9.

+0
10

9, 81, 723, 6381, 55539, 475461, 3993243, 32857101, 264890019, 2094889941, 16282118763, 124625344221, 941303216499, 7029057066021, 51980086628283, 381227207181741, 2776407821318979, 20100192515299701, 144786930345697803 (list; graph; listen)

	OFFSET	`1,1`
	LINKS	`Milan Janjic, Enumerative Formulas for Some Functions on Finite Sets`
	FORMULA	`a(n)=157^n-456^n+655^n-554^n+283^n-82^n+1.`
	EXAMPLE	`a(8)=32857101`
	MAPLE	`f:=n->157^n-456^n+655^n-554^n+283^n-82^n+1;`
	CROSSREFS	`Cf. A125630.` `Sequence in context: A063824 A167717 A073531 this_sequence A125947 A120997 A125630` `Adjacent sequences: A125907 A125908 A125909 this_sequence A125911 A125912 A125913`
	KEYWORD	`nonn,base`
	AUTHOR	`Aleksandar M. Janjic and Milan R. Janjic, (agnus(AT)blic.net), Feb 04 2007`

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Last modified November 24 23:16 EST 2009. Contains 167481 sequences.

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