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A203771 v(n+1)/v(n), where v=A203770. 2

%I #7 Jan 09 2013 04:01:22

%S 2,289,9248,63266116,10249110792,554962779291904,284140942997454848,

%T 62291092000572728444176,77863865000715910555220000,

%U 48803803104917291287339317067776,126499457647945619016783509839675392

%N v(n+1)/v(n), where v=A203770.

%C See A093883 for a discussion and guide to related sequences.

%t f[j_] := Floor[(j + 1)/2]; z = 16;

%t u := Product[f[j]^4 + f[k]^4, {j, 1, k - 1}]

%t v[n_] := Product[u, {k, 2, n}]

%t Table[v[n], {n, 1, z}] (* A203770 *)

%t Table[v[n + 1]/v[n], {n, 1, z}] (* A203771 *)

%K nonn

%O 1,1

%A _Clark Kimberling_, Jan 05 2012

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Last modified April 24 00:30 EDT 2024. Contains 371917 sequences. (Running on oeis4.)