306874

Appears in sequences

• McKay-Thompson series of class 21D for Monster.at n=37A058566
• a(1)=1, then a(n)=2*a(n-1) if n is prime, a(n)=2*a(n-1)+1 if n not prime.at n=18A118255
• Numbers whose binary representation shows the distribution of prime numbers up to the n-th prime, using "0" for primes and "1" for nonprime numbers.at n=7A139104
• Bisection of A139104.at n=3A139112
• McKay-Thompson series of class 21D for the Monster group with a(0) = 2.at n=37A226015