817053

Appears in sequences

• a(n) is the number of numbers between 1 and 2^m with m-n prime factors (counted with multiplicity), for m sufficiently large.at n=17A052130
• Conjectured number of numbers that are not the sum of three n-gonal numbers, or -1 if infinite.at n=30A118279
• Conjectured number of numbers that are not the sum of three (2n+1)-gonal numbers; bisection of A118279.at n=15A118281