OFFSET
1,1
LINKS
Amiram Eldar, Table of n, a(n) for n = 1..10000
Umberto Cerruti, Pseudoprimi di Fermat e numeri di Carmichael (in Italian), p. 14.
PROG
(Magma) [(12*n+1)*(24*n+1)*(36*n+1)*(72*n+1): n in [1..4000] | IsPrime(12*n+1) and IsPrime(24*n+1) and IsPrime(36*n+1) and IsPrime(72*n+1)];
CROSSREFS
KEYWORD
nonn
AUTHOR
Vincenzo Librandi, Feb 26 2015
STATUS
approved