Expansion of e.g.f. exp(x + 2 * Sum_{k>=2} x^(2^k)/2^k).
A308461
Expansion of e.g.f. exp(x + 2 * Sum_{k>=2} x^(2^k)/2^k).
Terms
- a(0) =1a(1) =1a(2) =1a(3) =1a(4) =13a(5) =61a(6) =181a(7) =421a(8) =15961a(9) =137593a(10) =682921a(11) =2498761a(12) =77344741a(13) =927575221a(14) =6402167773a(15) =31881065581
External references
- oeis: A308461