A030661 Product of next 2 primes after n.

6, 15, 35, 35, 77, 77, 143, 143, 143, 143, 221, 221, 323, 323, 323, 323, 437, 437, 667, 667, 667, 667, 899, 899, 899, 899, 899, 899, 1147, 1147, 1517, 1517, 1517, 1517, 1517, 1517, 1763, 1763, 1763, 1763, 2021, 2021, 2491, 2491, 2491, 2491, 3127, 3127, 3127, 3127

Offset

1,1

Links

Paolo Xausa, Table of n, a(n) for n = 1..10000

Formula

a(n) = A151800(n) * A101300(n) . - R. J. Mathar, Aug 09 2019

Maple

A030661 := n->nextprime(n) * nextprime(nextprime(n));

Mathematica

Times @@@ NextPrime[Range[50], {1, 2}] (* Paolo Xausa, Sep 30 2025 *)

Crossrefs

Cf. A000040, A030641, A030642.

Sequence in context: A120849 A358210 A338053 * A245630 A357848 A392373

Adjacent sequences: A030658 A030659 A030660 * A030662 A030663 A030664

Keyword

nonn

Author

N. J. A. Sloane

Extensions

More terms from Paolo Xausa, Sep 30 2025

Status

approved