This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
%I A272470 #16 Dec 07 2019 12:18:28 %S A272470 14,21,35,49,77,91,119,133,161,203,217,259,287,301,329,371,413,427, %T A272470 469,497,511,553,581,623,679,707,721,749,763,791,889,917,959,973,1043, %U A272470 1057,1099,1141,1169,1211,1253,1267,1337,1351,1379,1393,1477,1561,1589,1603,1631,1673,1687,1757,1799,1841,1883,1897 %N A272470 7 times the primes. %F A272470 a(n) = 7*prime(n) = 7*A000040(n). %t A272470 7 Prime@ Range@ 58 (* _Michael De Vlieger_, May 01 2016 *) %o A272470 (PARI) a(n) = 7*prime(n); \\ _Michel Marcus_, May 01 2016 %o A272470 (Python) %o A272470 from sympy import prime %o A272470 for n in range(1,1000):print(7*prime(n),end=", ") # _Soumil Mandal_, May 08 2016 %Y A272470 Column 4 of A272214. %Y A272470 k times the primes (k=1..6): A000040, A100484, A001748, A001749, A001750, A138636. %K A272470 nonn,easy %O A272470 1,1 %A A272470 _Omar E. Pol_, Apr 30 2016