This site is supported by donations to The OEIS Foundation.

 Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!)
 A004332 Binomial coefficient C(4n,n-2). 2
 1, 12, 120, 1140, 10626, 98280, 906192, 8347680, 76904685, 708930508, 6540715896, 60403728840, 558383307300, 5166863427600, 47855699958816, 443643407165376, 4116305022165108, 38223742100828400, 355214207837288800 (list; graph; refs; listen; history; text; internal format)
 OFFSET 2,2 REFERENCES M. Abramowitz and I. A. Stegun, eds., Handbook of Mathematical Functions, National Bureau of Standards Applied Math. Series 55, 1964 (and various reprintings), p. 828. LINKS Vincenzo Librandi, Table of n, a(n) for n = 2..200 M. Abramowitz and I. A. Stegun, eds., Handbook of Mathematical Functions, National Bureau of Standards, Applied Math. Series 55, Tenth Printing, 1972 [alternative scanned copy]. FORMULA G.f.: g*(g-1)^2/(4-3*g) where g = 1+x*g^4 is the g.f. of A002293. - Mark van Hoeij, Nov 17 2011 -3*(3*n+2)*(n-2)*(3*n+1)*a(n) +8*(4*n-3)*(2*n-1)*(4*n-1)*a(n-1)=0. - R. J. Mathar, May 27 2014 MATHEMATICA Table[Binomial[4n, n-2], {n, 2, 20}]  (* Harvey P. Dale, Apr 11 2011 *) CROSSREFS Sequence in context: A291391 A115902 A277491 * A129329 A266393 A129332 Adjacent sequences:  A004329 A004330 A004331 * A004333 A004334 A004335 KEYWORD nonn,easy AUTHOR STATUS approved

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recent
The OEIS Community | Maintained by The OEIS Foundation Inc.

Last modified September 15 14:04 EDT 2019. Contains 327078 sequences. (Running on oeis4.)