1048366

Appears in sequences

• a(n) = 2^n - n*(n+1)/2.at n=20A014833
• Expansion of x(1-3x+5x^2-2x^3)/((1-x)^3*(1-2x)).at n=19A130104
• Difference between 4^n and the product of primes less than or equal to n.at n=10A319857