id:A098659 - OEIS Search Results

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Expansion of 1/sqrt((1-7x)^2-24x^2).

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1, 7, 61, 595, 6145, 65527, 712909, 7863667, 87615745, 983726695, 11112210781, 126142119187, 1437751935361, 16443380994775, 188609259215725, 2168833084841395, 24994269200292865, 288596644195946695 (list; graph; listen)

	OFFSET	`0,2`
	FORMULA	`G.f.: 1/sqrt(1-14x+25x^2); E.g.f.: exp(7x)BesselI(0, sqrt(24)x)=exp(7x)BesselI(0, 2sqrt(6)x) a(n)=sum{k=0..n, C(n, k)^2*6^k}; a(n)=[t^n]((1+7x+6x^2)^n).`
	CROSSREFS	`Cf. A084771, A069835.` `Sequence in context: A015572 A066443 A108448 this_sequence A113718 A077642 A071172` `Adjacent sequences: A098656 A098657 A098658 this_sequence A098660 A098661 A098662`
	KEYWORD	`easy,nonn`
	AUTHOR	`Paul Barry (pbarry(AT)wit.ie), Sep 20 2004`

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Last modified August 19 23:53 EDT 2008. Contains 142930 sequences.

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