A272387 Smallest primes of 6 X 6 magic squares formed from consecutive primes.

7, 41, 47, 59, 67, 137, 149, 151, 173, 181, 191, 199, 229, 241, 257, 277, 283, 313, 409, 421, 499, 503, 509, 631, 701, 709, 829, 887, 907, 971, 977, 983, 1013, 1019, 1033, 1049, 1051, 1061, 1201, 1223, 1229, 1321, 1439, 1451, 1459, 1489, 1493, 1523, 1531, 1549

Offset: 1

Author

Arkadiusz Wesolowski, Apr 28 2016

Keywords

• nonn

Links

• Eric Weisstein's World of Mathematics, Prime Magic Square
• Index entries for sequences related to magic squares

Crossrefs

Cf. A256891 (analog for 3 X 3), A260673 (4 X 4), A272386 (5 X 5).

Cf. A177434 (magic sums, 6 X 6 consecutive primes).

Programs

PARI

A272387(n)=MagicPrimes(A177434(n),6)[1] \\ See A073519 for MagicPrimes(). - M. F. Hasler, Oct 28 2018

PARI

is_candidate(p,N=6)={denominator(p=A177434(,p,N))==1 && !bittest(p-N,0)} \\ This necessary condition is also sufficient for all primes up to and beyond the limit of the terms displayed in DATA. - M. F. Hasler, Oct 30 2018