68993

Properties

Appears in sequences

• Primes of the form 22*(n^2)+1.at n=24A117049
• Smallest of four consecutive primes whose average is a triangular number.at n=33A226155
• G.f. A(x) satisfies: 1 = Sum_{n>=0} x^n * (1 + n*x)^n / A(x)^(n+1).at n=12A324614
• Expansion of Product_{k>=1} B(x^k), where B(x) is the g.f. of A003114.at n=35A327690
• Prime numbersat n=6854