a(n) is the denominator of Sum_{k = 1..n} 1 / (k*A375781(k)).
A375522
a(n) is the denominator of Sum_{k = 1..n} 1 / (k*A375781(k)).
Terms
- a(0) =1a(1) =2a(2) =6a(3) =15a(4) =105a(5) =1155a(6) =1336335a(7) =892896284280
External references
- oeis: A375522