a(n) equals the coefficient of x^(n*(n+1)) in Sum_{m>=0} (m+1) * x^m * (1 + x^m)^m / (1 + x^(m+1))^(m+2) for n >= 0.
A326286
a(n) equals the coefficient of x^(n*(n+1)) in Sum_{m>=0} (m+1) * x^m * (1 + x^m)^m / (1 + x^(m+1))^(m+2) for n >= 0.
Terms
- a(0) =1a(1) =8a(2) =41a(3) =90a(4) =671a(5) =6788a(6) =31803a(7) =119486a(8) =746315a(9) =1959108a(10) =17687917a(11) =168219722a(12) =1612302467a(13) =6734874480a(14) =30113355681a(15) =146636111898a(16) =714115126295
External references
- oeis: A326286