43977

Appears in sequences

• Number of arrays of -3..3 integers x(1..n) with every x(i) in a subsequence of length 1, 2, 3 or 4 with sum zero.at n=6A193705
• T(n,k)=Number of arrays of -k..k integers x(1..n) with every x(i) being in a subsequence of length 1, 2, 3 or 4 with sum zero.at n=42A193710
• Number of closed lambda-terms of size n with size 0 for the variables.at n=7A220894
• Number of length-n 0..2 arrays with no repeated value differing from the previous repeated value by more than one.at n=9A269578
• Expansion of Product_{k>=1} (1 + k^2*x^k)^k.at n=9A285737