1721632024
domain: N
Appears in sequences
- Number of labeled 2-regular digraphs with n nodes.at n=9A007107
- Triangle T(n,k) read by rows: coefficients of polynomials P_n(t) defined in Formula section.at n=54A321711
- Triangle T(n,k) read by rows: Number of traceless binary n X n matrices with all row and column sums equal to k, 1<=k<=n.at n=37A364068