-45568

Appears in sequences

• Triangle T(n,k) = (1-k*(k-1))*A053120(n,k), read by rows, 0<=k<=n.at n=65A137448
• a(n) = -2*a(n-1)+4*a(n-2), n>1 ; a(0) = 1, a(1) = -4.at n=9A152174