69677

Properties

Appears in sequences

• a(n) = 4*a(n-1) - 3*a(n-2) + 2*a(n-3) - 1*a(n-4).at n=12A138747
• Primes having only {6, 7, 9} as digits.at n=31A261184
• Solution of the complementary equation a(n) = 2*a(n-1) + b(n-1), where a(0) = 1, a(1) = 4, b(0) = 2, and (a(n)) and (b(n)) are increasing complementary sequences.at n=14A295056
• Square array read by antidiagonals upwards: T(n,k) for integer k >= 0 is the n-th prime p such that p^(2*3^k) + p^(3^k) + 1 is prime.at n=43A344448
• Prime numbersat n=6909