Expansion of e.g.f. (sec(x) + tan(x))/(2 - exp(x)).
A306857
Expansion of e.g.f. (sec(x) + tan(x))/(2 - exp(x)).
Terms
- a(0) =1a(1) =2a(2) =6a(3) =27a(4) =158a(5) =1147a(6) =9956a(7) =100667a(8) =1162478a(9) =15097487a(10) =217833456a(11) =3457099107a(12) =59851694498
External references
- oeis: A306857