47506

Appears in sequences

• a(n) is the least k such that k*Mrs(n)*Mrs(n+1)*Mrs(n+2) + 1 is prime, where Mrs(n) is the n-th Mersenne prime.at n=21A082747
• a(n) is the total number of pentagrams in a variant of pentagram fractal after n iterations.at n=14A256571