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A203522
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v(n+1)/v(n), where v=A203521.
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3
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5, 56, 1080, 52416, 2073600, 168537600, 9963233280, 1122750720000, 234209649623040, 22056529195008000, 5634088861040640000, 1027073825689514803200, 132063784535221862400000, 27917533370401003929600000
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listen;
history;
text;
internal format)
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OFFSET
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1,1
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LINKS
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MATHEMATICA
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f[j_] := Prime[j]; z = 15;
v[n_] := Product[Product[f[k] + f[j], {j, 1, k - 1}], {k, 2, n}]
d[n_] := Product[(i - 1)!, {i, 1, n}] (* A000178 *)
Table[v[n], {n, 1, z}] (* A203521 *)
Table[v[n + 1]/v[n], {n, 1, z - 1}] (* A203522 *)
Table[v[n]/d[n], {n, 1, 20}] (* A203523 *)
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CROSSREFS
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KEYWORD
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nonn
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AUTHOR
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STATUS
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approved
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