827190

Appears in sequences

• Form array in which n-th row is obtained by expanding (1 + x + x^2)^n and taking the 4th column from the center.at n=11A014533
• Theta series of A*_14 lattice.at n=57A023926
• a(n) = a(n-1) - (n-1)*a(n-4), with a(0) = 0, a(1) = 1, a(2) = 2, a(3) = 1.at n=21A122022
• Number of n X 1 0..2 arrays with rows and columns in lexicographic nondecreasing order but with exactly three mistakes.at n=13A278365