A114133 a(n) is the smallest number such that each of the first 2n primes appears exactly once in its prime factorization, either as factor or exponent.

8, 6125, 3780549773, 12832743794826606079, 18632315678640808861660235507687953, 3286237594434722554545877627252677146664874837189702511

Offset

1,1

Links

Harvey P. Dale, Table of n, a(n) for n = 1..18

Mathematica

fp[n_]:=Module[{c=TakeDrop[Prime[Range[2n]], n], a}, a=Reverse[c[[1]]]; Times@@ (c[[2]]^a)]; Join[{8}, Array[fp, 10, 2]] (* Harvey P. Dale, Jan 18 2020 *)

Crossrefs

Sequence in context: A079189 A334517 A278384 * A221233 A173190 A291879

Adjacent sequences: A114130 A114131 A114132 * A114134 A114135 A114136

Keyword

nonn

Author

Jon Wild, Feb 14 2006

Status

approved