40094

Appears in sequences

• Numbers n such that 57*2^n-1 is prime.at n=31A050554
• G.f.: 1 + Sum_{n>=1} a(n)*x^n/(1 - x^n) = Product_{n>=1} (1 + x^n)/(1 - x^n).at n=25A300274
• Convolution of A000009 and A000290.at n=25A360487