81997

Appears in sequences

• A trinomial transform of Fibonacci(3n).at n=7A091870
• Triangle read by rows: T(n,k) = 4*T(n-1,k-1) + T(n,k-1) with T(2*m,0) = 0 and T(2*m+1,0) = 5^m.at n=35A292466
• Numbers k such that prime(k+1)^prime(k+3) == prime(k) mod prime(k+2).at n=43A335571