a(n) = exp(1/2) * Sum_{k>=0} (2*k + 1)^n / ((-2)^k * k!).
A334190
a(n) = exp(1/2) * Sum_{k>=0} (2*k + 1)^n / ((-2)^k * k!).
Terms
- a(0) =1a(1) =0a(2) =-2a(3) =-4a(4) =4a(5) =64a(6) =248a(7) =48a(8) =-6512a(9) =-51200a(10) =-171296a(11) =830400a(12) =17870400a(13) =144684032a(14) =441316224a(15) =-5976726784a(16) =-119879356160
External references
- oeis: A334190