A272470 7 times the primes.

14, 21, 35, 49, 77, 91, 119, 133, 161, 203, 217, 259, 287, 301, 329, 371, 413, 427, 469, 497, 511, 553, 581, 623, 679, 707, 721, 749, 763, 791, 889, 917, 959, 973, 1043, 1057, 1099, 1141, 1169, 1211, 1253, 1267, 1337, 1351, 1379, 1393, 1477, 1561, 1589, 1603, 1631, 1673, 1687, 1757, 1799, 1841, 1883, 1897

Offset: 1

Author

Omar E. Pol, Apr 30 2016

Keywords

• nonn
• easy

Crossrefs

Column 4 of A272214.

k times the primes (k=1..6): A000040, A100484, A001748, A001749, A001750, A138636.

Programs

Mathematica

7 Prime@ Range@ 58 (* Michael De Vlieger, May 01 2016 *)

PARI

a(n) = 7*prime(n); \\ Michel Marcus, May 01 2016

Python

from sympy import prime
for n in range(1,1000):print(7*prime(n),end=", ") # Soumil Mandal, May 08 2016

Formula

a(n) = 7*prime(n) = 7*A000040(n).