id:A137157 - OEIS Search Results

Search: id:A137157

Displaying 1-1 of 1 results found.

page 1

G.f.: 1 = Sum_{n>=0} a(n)*x^n/(1+x)^(2*2^n).

+0
5

1, 2, 5, 24, 239, 4920, 206727, 17568408, 3003763243, 1030272816360, 707851744149198, 973425618916674288, 2678332881795756783639, 14741522294008025924154864, 162290544340043699103996962253 (list; table; graph; listen)

	OFFSET	`0,2`
	COMMENT	`Equals unsigned column 1 of triangle A137156.`
	PROGRAM	`(PARI) {a(n)=polcoeff(1-sum(k=0, n-1, a(k)x^k/(1+x+xO(x^n))^(2^(k+1)) ), n)}`
	CROSSREFS	`Cf. A137156; A001192, A137158, A137159, A137160.` `Adjacent sequences: A137154 A137155 A137156 this_sequence A137158 A137159 A137160` `Sequence in context: A020124 A012249 A052808 this_sequence A025134 A076534 A095708`
	KEYWORD	`nonn,tabl`
	AUTHOR	`Paul D. Hanna (pauldhanna(AT)juno.com), Jan 24 2008`

page 1

Search completed in 0.002 seconds

Last modified January 7 17:35 EST 2009. Contains 152824 sequences.

AT&T Labs Research