The OEIS Foundation is supported by donations from users of the OEIS and by a grant from the Simons Foundation.

 Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!)
 A203767 v(n+1)/v(n), where v=A203766. 2
 2, 25, 200, 16900, 304200, 72250000, 2312000000, 1104760757776, 55238037888800, 44628759527040000, 3213270685946880000, 3948896391660025000000, 386991846382682450000000, 673918119287694361600000000 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS See A093883 for a discussion and guide to related sequences. LINKS MATHEMATICA f[j_] := Floor[(j + 1)/2]; z = 16; u := Product[f[j]^2 + f[k]^2, {j, 1, k - 1}] v[n_] := Product[u, {k, 2, n}] Table[v[n], {n, 1, z}]          (* A203766 *) Table[v[n + 1]/v[n], {n, 1, z}] (* A203767 *) CROSSREFS Sequence in context: A220276 A215298 A094218 * A206392 A074438 A068176 Adjacent sequences:  A203764 A203765 A203766 * A203768 A203769 A203770 KEYWORD nonn AUTHOR Clark Kimberling, Jan 05 2012 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 April 6 08:53 EDT 2020. Contains 333268 sequences. (Running on oeis4.)