A088707 Semiprimes + 1.

5, 7, 10, 11, 15, 16, 22, 23, 26, 27, 34, 35, 36, 39, 40, 47, 50, 52, 56, 58, 59, 63, 66, 70, 75, 78, 83, 86, 87, 88, 92, 94, 95, 96, 107, 112, 116, 119, 120, 122, 123, 124, 130, 134, 135, 142, 143, 144, 146, 147, 156, 159, 160, 162, 167, 170, 178, 179, 184, 186

Offset: 1

Author

Reinhard Zumkeller, Oct 11 2003

Keywords

• nonn

Comments

a(n) = A001358(n) + 1.

Links

• Reinhard Zumkeller, Table of n, a(n) for n = 1..10000
• Eric Weisstein's World of Mathematics, Semiprime

Crossrefs

Cf. A005385 (primes), A109373 (semiprimes), A065516 (first differences).

Programs

Haskell

a088707 = (+ 1) . a001358  -- Reinhard Zumkeller, Feb 20 2012