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 A203755 Vandermonde sequence using x^4 + y^4 applied to (0,1,1,2,2,...,floor(n/2)). 5
 1, 1, 2, 9248, 1368408064, 7012482928301113344, 5821608871192502942968054284288, 827078717211493220641742410981240687143117914112, 60161773220249337113595772781004931116549061984924929733289475833856 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,3 COMMENTS See A093883 for a discussion and guide to related sequences. LINKS MATHEMATICA f[j_] := Floor[j/2]; z = 16; u := Product[f[j]^4 + f[k]^4, {j, 1, k - 1}] v[n_] := Product[u, {k, 2, n}] Table[v[n], {n, 1, z}] (* A203755 *) Table[v[n + 1]/v[n], {n, 1, z}] (* A203756 *) Table[Sqrt[v[n + 1]/v[n]], {n, 1, z}] Table[Sqrt[v[2 n]/v[2 n - 1]], {n, 1, z}] (* A203757 *) Table[Sqrt[v[2 n + 1]/(2 v[2 n])], {n, 1, z}] (* A203758 *) %/%% (* A000290 *) CROSSREFS Sequence in context: A104904 A272247 A167748 * A285692 A340546 A343700 Adjacent sequences: A203752 A203753 A203754 * A203756 A203757 A203758 KEYWORD nonn AUTHOR Clark Kimberling, Jan 05 2012 STATUS approved

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Last modified March 22 15:23 EDT 2023. Contains 361432 sequences. (Running on oeis4.)