id:A103456 - OEIS Search Results

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0^n+10^n-1.

+0
1

1, 9, 99, 999, 9999, 99999, 999999, 9999999, 99999999, 999999999, 9999999999, 99999999999, 999999999999, 9999999999999, 99999999999999, 999999999999999, 9999999999999999, 99999999999999999, 999999999999999999 (list; graph; listen)

	OFFSET	`0,2`
	COMMENT	`A transform of 10^n under the matrix A103452.`
	FORMULA	`G.f.: (1-2x+10x^2)/((1-x)(1-10x)); a(n)=sum{k=0..n, A103452(n, k)10^k}; a(n)=sum{k=0..n, (20^(n-k)-1)0^(k(n-k))10^k}.` `a(n)=A002283(n), n>0. [From R. J. Mathar (mathar(AT)strw.leidenuniv.nl), Aug 30 2008]`
	CROSSREFS	`Adjacent sequences: A103453 A103454 A103455 this_sequence A103457 A103458 A103459` `Sequence in context: A108908 A116260 A002283 this_sequence A015685 A051581 A080291`
	KEYWORD	`easy,nonn`
	AUTHOR	`Paul Barry (pbarry(AT)wit.ie), Feb 06 2005`

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Last modified October 11 13:47 EDT 2008. Contains 144830 sequences.

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