A094628 - OEIS

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A094628

Numbers n with sum of digits(n) = 4.

4, 13, 40, 130, 400, 1300, 4000, 13000, 40000, 130000, 400000, 1300000, 4000000, 13000000, 40000000, 130000000, 400000000, 1300000000, 4000000000, 13000000000, 40000000000, 130000000000, 400000000000, 1300000000000 (list; graph; refs; listen; history; internal format)

	OFFSET	`1,1`
	FORMULA	`G.f. : (4+13x-9x^2)/(1-10x^2); a(n)=10^(n/2)(13sqrt(10)/20+2-(13sqrt(10)/20-2)(-1)^n).`
	CROSSREFS	`Cf. A094629.` `Sequence in context: A091141 A098183 A171556 * A034742 A149424 A097112` `Adjacent sequences: A094625 A094626 A094627 * A094629 A094630 A094631`
	KEYWORD	`easy,nonn,base`
	AUTHOR	`Paul Barry (pbarry(AT)wit.ie), May 15 2004`
	EXTENSIONS	`Edited by Charles R Greathouse IV (charles.greathouse(AT)case.edu), Aug 03 2010`

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Last modified February 17 06:27 EST 2012. Contains 205998 sequences.