|
%I #8 Mar 30 2012 17:23:05
%S 2189,7208,20538,69632,127790,265375,341267,461849,621457,1453179,
%T 1700469,1828994,1837608,2114852,2222674,2354838,2826692,2905552,
%U 2933084,3162302,3466663,3972552,3996543,4535984,5382039,6192528,6392223
%N Numbers m such that 2520*m/k + 1 is a prime for k = 1,...,7.
%C Equivalently, 7!*m/2+k equals k times a prime, for k=1,...,7. The primes 2520m+1 are listed in A207825, and are also the terms of the sequence A071369 which end in the digit "1".
%F A208549(n) = (A207825(n)-1)/2520.
%o (PARI) {my(p=1); until(, isprime(p+=2520) | next; for(j=2,7, isprime(p\j+1)|next(2)); print1(p\2520", "))}
%K nonn
%O 1,1
%A _M. F. Hasler_, Feb 28 2012
|
