a(0) = 1; a(n) = 2 * Sum_{k=1..n} binomial(n,k) * a(k-1).
A343523
a(0) = 1; a(n) = 2 * Sum_{k=1..n} binomial(n,k) * a(k-1).
Terms
- a(0) =1a(1) =2a(2) =8a(3) =34a(4) =164a(5) =878a(6) =5136a(7) =32490a(8) =220476a(9) =1594470a(10) =12223016a(11) =98876322a(12) =840804820a(13) =7491247006a(14) =69730182720a(15) =676390547034
External references
- oeis: A343523