E.g.f.: Sum_{n>=0} ((1+x)^n - 1)^n * 3^n / n!.
A326273
E.g.f.: Sum_{n>=0} ((1+x)^n - 1)^n * 3^n / n!.
Terms
- a(0) =1a(1) =3a(2) =36a(3) =837a(4) =29592a(5) =1439775a(6) =90723564a(7) =7109399241a(8) =672900166584
External references
- oeis: A326273
A326273
E.g.f.: Sum_{n>=0} ((1+x)^n - 1)^n * 3^n / n!.