68684

Appears in sequences

• If S*2^k - 3 and S*2^k + 3 are primes for k=0 to 2, then a(n) = S/10.at n=7A093290
• a(n) = 22*a(n-2) - a(n-4) + 10, for n > 3, with a(0) = 0, a(1) = 4, a(2) = 6, a(3) = 98.at n=8A105037