Expansion of e.g.f. exp(Sum_{k>=1} x^(k^2)*(2 + x^(k^2))/(2*k^2)).
A308381
Expansion of e.g.f. exp(Sum_{k>=1} x^(k^2)*(2 + x^(k^2))/(2*k^2)).
Terms
- a(0) =1a(1) =1a(2) =2a(3) =4a(4) =16a(5) =56a(6) =256a(7) =1072a(8) =11264a(9) =119296a(10) =1075456a(11) =9088256a(12) =85292032a(13) =894690304a(14) =8968964096a(15) =90882789376
External references
- oeis: A308381