a(n) = [x^n] ( E(x)/E(-x) )^n where E(x) = exp( Sum_{k >= 1} A005258(k)*x^k/k ).
A362722
a(n) = [x^n] ( E(x)/E(-x) )^n where E(x) = exp( Sum_{k >= 1} A005258(k)*x^k/k ).
Terms
- a(0) =1a(1) =6a(2) =72a(3) =1266a(4) =23232a(5) =445506a(6) =8740728a(7) =174366114a(8) =3519799296a(9) =71696570010
External references
- oeis: A362722