a(0) = 1, a(1) = 0; a(n) = a(n-2) + Sum_{k=0..n-1} k * a(k) * a(n-1-k).
A385287
a(0) = 1, a(1) = 0; a(n) = a(n-2) + Sum_{k=0..n-1} k * a(k) * a(n-1-k).
Terms
- a(0) =1a(1) =0a(2) =1a(3) =2a(4) =7a(5) =32a(6) =177a(7) =1148a(8) =8535a(9) =71552a(10) =668037a(11) =6877742a(12) =77448741a(13) =947342072a(14) =12512378625a(15) =177525399952
External references
- oeis: A385287