id:A125947 - OEIS Search Results

Search: id:A125947

Displaying 1-1 of 1 results found.

page 1

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 2,3,4,5 and at least one of digits 6,7,8,9.

+0
18

9, 81, 729, 6513, 57369, 495921, 4194969, 34689393, 280607769, 2224214961, 17313344409, 132651929073, 1002605145369, 7490229758001, 55407572177049, 406450276733553, 2960529995462169, 21435301615525041, 154414691892116889 (list; graph; listen)

	OFFSET	`1,1`
	LINKS	`Milan Janjic, Enumerative Formulas for Some Functions on Finite Sets`
	FORMULA	`a(n)=167^n-486^n+685^n-564^n+283^n-82^n+1.`
	EXAMPLE	`a(8)=34689393`
	MAPLE	`f:=n->167^n-486^n+685^n-564^n+283^n-82^n+1;`
	CROSSREFS	`Cf. A125630.` `Adjacent sequences: A125944 A125945 A125946 this_sequence A125948 A125949 A125950` `Sequence in context: A063824 A073531 A125910 this_sequence A120997 A125630 A100062`
	KEYWORD	`nonn,base`
	AUTHOR	`Aleksandar M. Janjic and Milan R. Janjic, (agnus(AT)blic.net), Feb 04 2007`

page 1

Search completed in 0.002 seconds

Last modified October 7 14:39 EDT 2008. Contains 144666 sequences.

AT&T Labs Research