A013636 a(n) = n*nextprime(n).

0, 2, 6, 15, 20, 35, 42, 77, 88, 99, 110, 143, 156, 221, 238, 255, 272, 323, 342, 437, 460, 483, 506, 667, 696, 725, 754, 783, 812, 899, 930, 1147, 1184, 1221, 1258, 1295, 1332, 1517, 1558, 1599, 1640, 1763

Offset: 0

Author

N. J. A. Sloane

Keywords

• nonn
• easy

Links

• Harvey P. Dale, Table of n, a(n) for n = 0..1000

Crossrefs

Cf. A151800.

Programs

Maple

[ seq(nextprime(i)*i,i=0..100) ];

Mathematica

Table[n NextPrime[n],{n,0,50}] (* Harvey P. Dale, Jan 08 2025 *)

PARI

a(n) = n*nextprime(n+1); \\ Michel Marcus, Dec 05 2024

Formula

a(n) = n^2 + O(n^1.525). - Charles R Greathouse IV, Dec 05 2024

Extensions

Comment removed by Charles R Greathouse IV, Mar 19 2010