439992

Appears in sequences

• Theta series of the coset of the E_7 lattice in its dual.at n=26A005931
• a(n) = 6*a(n-1) + 3*a(n-2) for n > 2, a(0)=1, a(1)=6.at n=7A090018
• Square array T(n,k), n>=0, k>=0, read by antidiagonals, where column k is the expansion of g.f. 1/(1 - 2*k*x - k*x^2).at n=62A342134