72513

Appears in sequences

• Expansion of 1/((1-x)(1-4x)(1-7x)(1-12x)).at n=4A021894
• Numbers n such that 291*2^n-1 is prime.at n=27A050904
• E.g.f.: A(x) = Sum_{n>=0} exp((3^n-1)/2*x)*x^n/n!.at n=6A135753