A230481 Prime(prime(2n)) - prime(2 prime(n)).

-2, 4, 12, 24, 30, 56, 52, 78, 84, 82, 108, 88, 126, 144, 126, 162, 150, 204, 210, 210, 248, 242, 234, 348, 266, 268, 320, 362, 380, 394, 304, 396, 340, 480, 378, 420, 466, 486, 476, 464, 498, 578, 476, 566, 592, 678, 600, 456, 524, 660, 714, 742, 768, 756

Offset

1,1

Comments

As difference of two odd primes, all terms are even.

Links

M. F. Hasler, Table of n, a(n) for n = 1..10000

Formula

a(n) = A217622(n) - A230460(n) = 2*A230482(n).

Prog

(PARI) a=n->prime(prime(2*n))-prime(2*prime(n))

Crossrefs

Cf. A066066, A000040, A006450, A031215, A217622, A230460.

Sequence in context: A059322 A163908 A332666 * A212169 A108720 A330592

Adjacent sequences: A230478 A230479 A230480 * A230482 A230483 A230484

Keyword

sign

Author

M. F. Hasler, Oct 20 2013

Status

approved