409360

Appears in sequences

• Number of bipartite graphs with 3 edges on nodes {1..n}.at n=17A053526
• Ninth diagonal (m=8) of triangle A084938; a(n) = A084938(n+8,n) = (n^8 + 84*n^7 + 3346*n^6 + 84840*n^5 + 1550689*n^4 + 21632436*n^3 + 224782284*n^2 + 1377648720*n)/40320.at n=5A090394
• Harary index of the n X n queen graph.at n=34A296196
• Triangle read by rows: T(n,k) is the number of labeled quasi-loop-threshold graphs on vertex set [n] with k components, for n >= 1 and 1 <= k <= n.at n=32A350746