A101805 - OEIS

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A101805

Number of Ruth-Aaron numbers (with multiplicity) less than 10^n.

2, 4, 7, 20, 57, 149, 523, 1835, 6810, 26222, 106670, 444085 (list; graph; refs; listen; history; text; internal format)

	OFFSET	`1,1`
	LINKS	`Table of n, a(n) for n=1..12.` `Eric Weisstein's World of Mathematics, Ruth-Aaron Pair`
	CROSSREFS	`Cf. A039752.` `Sequence in context: A223013 A101569 A225435 * A145777 A188497 A153550` `Adjacent sequences: A101802 A101803 A101804 * A101806 A101807 A101808`
	KEYWORD	`nonn,more`
	AUTHOR	`Eric W. Weisstein, Dec 16, 2004`
	EXTENSIONS	`Offset corrected and a(9)-a(12) from Donovan Johnson, Dec 14 2010`
	STATUS	`approved`

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Last modified May 25 15:57 EDT 2013. Contains 225647 sequences.