Expansion of e.g.f. exp(Sum_{i>=1} Sum_{j=1..i-1} x^(i*j) / (i*j)).
A327940
Expansion of e.g.f. exp(Sum_{i>=1} Sum_{j=1..i-1} x^(i*j) / (i*j)).
Terms
- a(0) =1a(1) =0a(2) =1a(3) =2a(4) =9a(5) =44a(6) =385a(7) =1854a(8) =23233a(9) =153656a(10) =2151441a(11) =18787130a(12) =338487721a(13) =3165541092a(14) =60609811249a(15) =835202858294
External references
- oeis: A327940