-3992
domain: Z
Appears in sequences
- McKay-Thompson series of class 20d for Monster.at n=39A058559
- Triangle read by rows: n-th row (n>=0) gives coefficients of characteristic polynomial of n X n generalized Cartan matrix M defined in Comments.at n=60A136678
- Numerator of Hermite(n, 2/13).at n=3A159492
- a(1) = 1; a(n+1) = -Sum_{d|n} a(n/d) * a(d).at n=13A325303