71398

Appears in sequences

• [ exp(4/7)*n! ].at n=7A030964
• Denominators of continued fraction convergents to sqrt(698).at n=12A042343
• Second binomial transform of the Catalan numbers.at n=8A064613
• Numbers n such that Lucas(prime(n)) is prime, where Lucas = A000032.at n=58A120561
• Triangle read by rows: row n is the first row of the matrix M[n]^(n-1), where M[n] is the n X n tridiagonal matrix with main diagonal (3,4,4,...) and super- and subdiagonals (1,1,1,...).at n=36A124574
• Riordan array (f(x), x*f(x)) where f(x) is the g.f. of A064613.at n=36A171568
• A(n, k) is the n-th binomial transform of the Catalan sequence (A000108) evaluated at k. Array read by descending antidiagonals for n >= 0 and k >= 0.at n=57A271025