A019524 - OEIS

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A019524

Duplicate terms of A007908.

11, 1212, 123123, 12341234, 1234512345, 123456123456, 12345671234567, 1234567812345678, 123456789123456789, 1234567891012345678910, 12345678910111234567891011, 123456789101112123456789101112 (list; graph; refs; listen; history; internal format)

	OFFSET	`0,1`
	REFERENCES	`F. Smarandache, "Collected Papers", Vol. II, Tempus Publ. Hse., Buharest, Romania, 1996.` `F. Iacobescu, Smarandache Partition Type and Other Sequences, Bull. Pure Appl. Sciences, Vol. 16E, No. 2 (1997), pp. 237-240.` `F. Smarandache, Sequences of Numbers Involved in Unsolved Problems, Hexis, Phoenix, 2006.`
	LINKS	`M. L. Perez et al., eds., Smarandache Notions Journal` `Eric Weisstein's World of Mathematics, Link to a section of The World of Mathematics.` `F. Smarandache, Collected Papers, Vol. II` `F. Smarandache, Sequences of Numbers Involved in Unsolved Problems.`
	FORMULA	`a(n) = A007908(n)(1 + 10^A058183(n)) = (n + a(n - 1)10^L(n)/(1 + 10^(nL(n - 1) - (10^L(n - 1) - 1)/9)))(1 + 10^((n + 1)*L(n) - (10^L(n) - 1)/9)) where L(n) = floor[log10(10n)] - HenryBottomley (se16(AT)btinternet.com), Nov 17 2000`
	CROSSREFS	`Sequence in context: A177068 A067105 A180581 * A078269 A015009 A068326` `Adjacent sequences: A019521 A019522 A019523 * A019525 A019526 A019527`
	KEYWORD	`nonn`
	AUTHOR	`R. Muller`

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Last modified February 15 10:56 EST 2012. Contains 205763 sequences.