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

 Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!)
 A127133 Self-convolution 4th root of column 3 (A127130) of triangle A127126. 7
 1, 1, 6, 52, 576, 7591, 114365, 1923185, 35541761, 714104502, 15475682769, 359547718332, 8911727170149, 234697278951915, 6544781944957233, 192669771715328227, 5971713743277322517, 194402722591654350978 (list; graph; refs; listen; history; text; internal format)
 OFFSET 0,3 LINKS G. C. Greubel, Table of n, a(n) for n = 0..80 MATHEMATICA T[n_, k_]:= T[n, k]= If[k==n, 1, Coefficient[(1 +x*Sum[x^(r-k-1)*Sum[T[r, c], {c, k+1, r}], {r, k+1, n}] +x^(n+1))^(k+1), x, n-k]]; CoefficientList[Series[ (Sum[T[n, 3]*x^n, {n, 0, 25}]/x^3)^(1/4), {x, 0, 20}], x] (* G. C. Greubel, Jan 28 2020 *) CROSSREFS Cf. A127126, A127127, A127128, A127129, A127130, A127131, A127132, A127134, A127135. Sequence in context: A357154 A232821 A355162 * A243249 A075756 A363008 Adjacent sequences: A127130 A127131 A127132 * A127134 A127135 A127136 KEYWORD nonn AUTHOR Paul D. Hanna, Jan 05 2007 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 June 10 17:53 EDT 2023. Contains 363206 sequences. (Running on oeis4.)