The OEIS is supported by the many generous donors to the OEIS Foundation.

 Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!)
 A136471 Column 1 of triangle A136470 (scaled): a(n) = A136470(n+1,1)/2^n. 2
 1, 4, 32, 756, 57008, 14053392, 11549010240, 32284463059856, 312975732247964288, 10703164992206736756608, 1309922159165846642159232512, 580548577042594102886390324391168 (list; graph; refs; listen; history; text; internal format)
 OFFSET 0,2 COMMENTS Triangle T = A136470 is defined by: column 0 of T^m = {C(m*2^n, n), n>=0}. LINKS PROG (PARI) {a(n)=local(M=matrix(n+2, n+2, r, c, binomial(r*2^(c-1), c-1)), P); P=matrix(n+2, n+2, r, c, binomial((r+1)*2^(c-1), c-1)); (P~*M~^-1)[n+2, 2]/2^n} CROSSREFS Cf. A136470; A136472. Sequence in context: A222829 A134087 A132854 * A243918 A298896 A231991 Adjacent sequences: A136468 A136469 A136470 * A136472 A136473 A136474 KEYWORD nonn AUTHOR Paul D. Hanna, Jan 01 2008 STATUS approved

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

Last modified March 22 02:41 EDT 2023. Contains 361413 sequences. (Running on oeis4.)