id:A098411 - OEIS Search Results

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Expansion of 1/(sqrt(1-4x)sqrt(1-12x)).

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1, 8, 72, 704, 7264, 77568, 847104, 9394176, 105334272, 1190899712, 13551235072, 154997784576, 1780378353664, 20522842062848, 237284128063488, 2750571189633024, 31956067676454912, 371997834879172608 (list; graph; listen)

	OFFSET	`0,2`
	FORMULA	`G.f.: 1/sqrt(1-16x+48x^2); E.g.f.: exp(8x)BesselI(0, 4x); a(n)=sum{k=0..n, 3^kbinomial(2k, k)binomial(2(n-k), n-k)}.`
	CROSSREFS	`Cf. A098410.` `Sequence in context: A078995 A082414 A145303 this_sequence A165323 A082366 A049388` `Adjacent sequences: A098408 A098409 A098410 this_sequence A098412 A098413 A098414`
	KEYWORD	`easy,nonn`
	AUTHOR	`Paul Barry (pbarry(AT)wit.ie), Sep 07 2004`

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Last modified December 8 08:31 EST 2009. Contains 170430 sequences.

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