A072568 Even interprimes.

4, 6, 12, 18, 26, 30, 34, 42, 50, 56, 60, 64, 72, 76, 86, 102, 108, 120, 134, 138, 144, 150, 154, 160, 170, 176, 180, 186, 192, 198, 228, 236, 240, 246, 254, 260, 266, 270, 274, 282, 288, 300, 312, 324, 334, 342, 348, 356, 370, 376, 386, 414, 420, 426, 432

Offset: 1

Author

Marco Matosic, Jun 21 2002

Keywords

• easy
• nonn

Comments

The interprimes (A024675) are those integers that lie at the midpoint between consecutive odd primes.

Links

• Amiram Eldar, Table of n, a(n) for n = 1..10000
• Eric Weisstein's World of Mathematics, Interprime

Crossrefs

Even members of A024675.

Cf. A024675, A072569, A072570, A072571, A072572, A072573.

Programs

Mathematica

Select[Plus @@@ Partition[Table[Prime[n], {n, 2, 100}], 2, 1]/2, EvenQ]

Extensions

Offset corrected by Amiram Eldar, Mar 23 2020