A127604 Integer part of 7th root of product of first n primes.

1, 1, 1, 2, 3, 4, 6, 9, 15, 25, 41, 68, 117, 200, 347, 613, 1097, 1975, 3601, 6621, 12221, 22814, 42891, 81443, 156560, 302701, 586897, 1144127, 2236326, 4393717, 8777595, 17613387, 35570395, 71983616, 147125801, 301280666, 620399178, 1284393250

Offset

1,4

Links

Table of n, a(n) for n=1..38.

Mathematica

a = {}; Do[b = 1; Do[b = b Prime[x], {x, 1, n}]; AppendTo[a, Floor[b^(1/7)]], {n, 1, 50}]; a

Crossrefs

Cf. A002110, A060797, A127600, A127601, A127602, A127603.

Sequence in context: A022159 A022161 A287148 * A268710 A223900 A326020

Adjacent sequences: A127601 A127602 A127603 * A127605 A127606 A127607

Keyword

nonn

Author

Artur Jasinski, Jan 19 2007

Status

approved