A140431 - OEIS

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A140431

2*A094555(n).

0, 2, 2, 12, 22, 92, 222, 772, 2102, 6732, 19342, 59732, 175782, 534172, 1588862, 4793892, 14327062, 43090412, 129052782, 387595252, 1161911942, 3487483452, 10458955102, 31383855812, 94137586422, 282440721292, 847266239822 (list; graph; refs; listen; history; internal format)

	OFFSET	`0,2`
	FORMULA	`b(n) = A091002(n-1); b(n+1)-3b(n)= A077925(n-2), where b(n)=floor(a(n)/10).`
	CROSSREFS	`Sequence in context: A194767 A202669 A178845 * A092900 A164961 A122007` `Adjacent sequences: A140428 A140429 A140430 * A140432 A140433 A140434`
	KEYWORD	`nonn,walk`
	AUTHOR	`Paul Curtz (bpcrtz(AT)free.fr), Jun 19 2008`
	EXTENSIONS	`Edited and extended by R. J. Mathar (mathar(AT)strw.leidenuniv.nl), Aug 02 2008`

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Last modified February 16 17:48 EST 2012. Contains 205939 sequences.