76986

Appears in sequences

• Places n such that the two remainders A187680(n) and A191906(n) are both zero.at n=26A192853
• Even numbers k such that 6k+1, 12k+1, 18k+1, 36k+1 and 72k+1 are all primes.at n=19A206349
• Numbers m such that 6m+1, 12m+1, 18m+1, 36m+1 and 72m+1 are all prime.at n=32A257035
• a(n) = 2*a(n-1) - a(n-2) + a(n-3) - a(n-4), where a(0) = 2, a(1) = 4, a(2) = 5, a(3) = 6.at n=28A288429