87154

Appears in sequences

• Number of bracelets (turnover necklaces) of n beads of 2 colors, 9 of them black.at n=18A032281
• a(n)=60*sum(1<=i<=j<=k<=n,i*j^2/k).at n=8A088943
• Triangle read by rows: T(n,k) is the number of dispersed Dyck paths of length n (i.e., Motzkin paths of length n with no (1,0)-steps at positive heights) having k DHU's (here U=(1,1), H=(1,0), and D=(1,-1)).at n=51A191397