G.f. A(x) satisfies: A(x) = x * exp(2 * Sum_{k>=1} (-1)^k * A(x^k) / k).
A345884
G.f. A(x) satisfies: A(x) = x * exp(2 * Sum_{k>=1} (-1)^k * A(x^k) / k).
Terms
- a(0) =1a(1) =-2a(2) =7a(3) =-26a(4) =103a(5) =-442a(6) =1982a(7) =-9122a(8) =42985a(9) =-206526a(10) =1007322a(11) =-4974066a(12) =24819268a(13) =-124949782a(14) =633882799a(15) =-3237261340a(16) =16629986395a(17) =-85873762466a(18) =445491479309
External references
- oeis: A345884