50287

Properties

Appears in sequences

• a(n) = a(1) + a(2) + ... + a(n-1) - a(m) for n >= 4, where m = n - 1 - 2^p and p is the unique integer such that 2^p < n - 1 <= 2^(p+1), starting with a(1) = 1, a(2) = 3, and a(4) = 4.at n=16A049930
• Numbers n such that (22^n+1)/23 is a prime.at n=10A057188
• Primes p giving prime quadruples (30p+11, 30p+13, 30p+17, 30p+19).at n=22A087771
• G.f. satisfies: A(x) = (1+x) * A(x^2)*A(x^3)*A(x^4)*...*A(x^n)*...at n=39A129373
• Primes of the form (2+n)*(1+2*n)+(1+n)*(2+2*n).at n=28A171748
• Prime numbersat n=5161