64880640

Appears in sequences

• Denominators of coefficients of log(1+x)/sqrt(1+x).at n=11A002550
• a(n) = 4^(n-4)*(n-1)*(n-2)*(n-3).at n=8A006044
• Numbers of isomers of unbranched a-4-catapolypentagons - see Brunvoll reference for precise definition.at n=19A121135
• Three-column array read by rows: the first row consists of the first two primes, p = 2 and q = 3, and their sum s = p + q = 5; afterwards the (n+1)-st row consists of the smallest pair of consecutive primes whose sum is a multiple of the sum in the n-th row followed by their sum.at n=41A284669