256896

Appears in sequences

• Theta series of P_{9a} packing.at n=28A005951
• Irregular triangle read by rows: T(n,k) = S1(n,k)*2^k, where S1(n,k) is the associated Stirling number of the first kind (cf. A008306) (n >= 0, 0 <= k <= floor(n/2)).at n=27A349479