A328467 Row 4 of A328464: a(n) = A276156(16n - 8) / 30.

1, 8, 78, 85, 1002, 1009, 1079, 1086, 17018, 17025, 17095, 17102, 18019, 18026, 18096, 18103, 323324, 323331, 323401, 323408, 324325, 324332, 324402, 324409, 340341, 340348, 340418, 340425, 341342, 341349, 341419, 341426, 7436430, 7436437, 7436507, 7436514, 7437431, 7437438, 7437508, 7437515, 7453447, 7453454, 7453524

Offset

1,2

Links

Antti Karttunen, Table of n, a(n) for n = 1..8192

Index entries for sequences related to primorial base

Formula

a(n) = (1/30) * A276156(16*n - 8).

Prog

(PARI)
A002110(n) = prod(i=1, n, prime(i));
A276156(n) = { my(p=2, pr=1, s=0); while(n, if(n%2, s += pr); n >>= 1; pr *= p; p = nextprime(1+p)); (s); };
A328467(n) = (A276156((16*n)-8) / 30);

Crossrefs

Row 4 of A328464.

Cf. A002110, A276156, A328461.

Sequence in context: A074841 A272208 A136954 * A347322 A202732 A222191

Adjacent sequences: A328464 A328465 A328466 * A328468 A328469 A328470

Keyword

nonn

Author

Antti Karttunen, Oct 18 2019

Status

approved