-2258

Appears in sequences

• Triangle of Faulhaber numbers (numerators) read by rows.at n=51A065551
• Alternating row sums of A066448.at n=59A350310
• a(0) = 1; a(n) = Sum_{k=0..floor((n-1)/2)} (-3)^k * a(k) * a(n-2*k-1).at n=11A352010