538968064

Appears in sequences

• a(n) = 2^n*(n^2 - n + 8)/8.at n=23A081908
• Triangle T, read by rows, where T(n,k) = [T^(2^k)](n-k,0) * (2^k)^(n-k) for n>=k>=0 such that row n of the 2^(n-1)-th root of T consists solely of integers given by: [T^( 1/2^(n-1) )](n,k) = (2^k)^(n-k) for n>=0.at n=52A134049
• Numbers m such that the equation phi(x) = m has even but no odd solutions.at n=5A143510