57500

Appears in sequences

• a(n) = n*(n+1)*(n+2)^2/6.at n=23A004320
• a(0) = 1, a(n) = 42*n^2 + 2 for n>0.at n=37A010023
• Number of -2..2 arrays x(0..n-1) of n elements with zero sum, and adjacent elements not equal modulo three (with -1 modulo 3 = 2).at n=10A199903
• a(n) is the number of subsets of {1..n} that contain exactly 1 odd and 3 even numbers.at n=50A330299