65560

Appears in sequences

• Permutation of N induced by rotating the node 4 left in the infinite planar binary tree shown at A065658.at n=31A065667
• Diagonal in array of n-gonal numbers A081422.at n=39A081437
• Number of pairs with two different elements which can be obtained by selecting unique elements from two sets with n+1 and n^2 elements respectively and n common elements.at n=40A085490
• Number of connected induced (non-null) subgraphs of the friendship graph with 2n+1 nodes.at n=7A286186