141209

Properties

Appears in sequences

• Number of legal Go positions on a 1 X n board (for which 3^n is a trivial upper bound).at n=11A102620
• Zeros in Cald's sequence: positions k such that A006509(k) = 0.at n=14A112877
• SanD-68 primes p: such that p+d is also prime and sum of digits A007953(p(p+d)) = d, with d = 68.at n=23A307474
• Prime numbersat n=13113