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

Offset

1,1

Links

Table of n, a(n) for n=1..40.

Formula

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

Maple

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

Crossrefs

Cf. A000040.

Sequence in context: A120849 A358210 A338053 * A245630 A357848 A049728

Adjacent sequences: A030658 A030659 A030660 * A030662 A030663 A030664

Keyword

nonn

Author

N. J. A. Sloane.

Status

approved