60760

Appears in sequences

• Number of triangles a queen can make (starting anywhere) on an n X n board.at n=31A030117
• Fifth column of (1,5)-Pascal triangle A096940.at n=29A096942
• a(n) = Sum_{m=1..n-1} floor(m(n-2)/2)^2.at n=16A125849
• Number of sequences of length n with elements {-2,-1,+1,+2}, such that the sum of elements of the whole sequence but of no proper subsequence equals 0 modulo n. For n>=4, the number of Hamiltonian (directed) circuits on the circulant graph C_n(1,2).at n=26A137725
• First differences of harmonic (or Ore) numbers A001599.at n=35A153789
• a(n) = n*(n+1)*(13*n+2)/6.at n=30A257093
• Intersection of A046346 and (A046346-2).at n=9A309310
• Irregular triangle read by rows: T(n,k), n>=1, k>=1, in which column k lists the numbers of A353689 multiplied by A000330(k), and the first element of column k is in row A000217(k).at n=33A353690