A135760 - OEIS

This site is supported by donations to The OEIS Foundation.

A135760

Least number in A001764 divisible by 3^n: a(n) = A001764(3^n-1).

1, 3, 43263, 6568517413771094628, 748787983804424579516665098357127267955239740580277791815018327 (list; graph; refs; listen; history; internal format)

	OFFSET	`0,2`
	COMMENTS	`Only numbers in A001764 not divisible by 3 are: A001764((3^n-1)/2) for n>=0.`
	FORMULA	`a(n) = C(3^(n+1)-3, 3^n-1) / (2*3^n-1).`
	PROG	`(PARI) a(n)=binomial(3^(n+1)-3, 3^n-1)/(2*3^n-1)`
	CROSSREFS	`Cf. A001764; A135759.` `Sequence in context: A068161 A116313 A140656 * A003541 A086829 A190722` `Adjacent sequences: A135757 A135758 A135759 * A135761 A135762 A135763`
	KEYWORD	`nonn`
	AUTHOR	`Paul D. Hanna (pauldhanna(AT)juno.com), Dec 02 2007`

Content is available under The OEIS End-User License Agreement .

Last modified February 15 08:20 EST 2012. Contains 205729 sequences.