A203754 Square root of A203753(n).

1, 1, 6, 12, 147, 441, 8112, 32448, 796005, 3980025, 122054688, 732328128, 26950548807, 188653841649, 8099902347264, 64799218778112, 3179644775178921, 28616802976610289, 1579734079664832000, 15797340796648320000

Offset: 1

Author

Clark Kimberling, Jan 05 2012

Keywords

• nonn

Crossrefs

Cf. A093883.

Programs

Mathematica

f[j_] := Floor[j/2]; z = 20;
u := Product[f[j]^2 - f[j] f[k] + f[k]^2, {j, 1, k - 1}]
v[n_] := Product[u, {k, 2, n}]
Table[v[n], {n, 1, z}]        (* A203752 *)
Table[v[n + 1]/v[n], {n, 1, z}]  (* A203753 *)
Table[Sqrt[v[n + 1]/v[n]], {n, 1, z}]  (* A203754 *)