72200

Appears in sequences

• a(n) = n^2*(n+1)^2/2.at n=19A163102
• Numbers of the form p^3*q^2*r^2 where p, q, and r are distinct primes.at n=30A179695
• Number of (n+1) X (2+1) 0..3 arrays with every 2 X 2 subblock having the sum of the absolute values of all six edge and diagonal differences equal to 9.at n=8A234134
• Number of (n+1) X (6+1) 0..2 arrays colored with the upper median value of each 2 X 2 subblock.at n=10A235952
• Numbers n = d_0d_1...d_n (n < 10) such that d_i is the number of digits equal to i in n (base b), where b is less than 10.at n=4A260387
• Number of (unlabeled) loopless multigraphs such that the sum of the numbers of vertices and edges is n.at n=18A265581
• a(n) = (2*n^2*(n^2 - 3) - (2*n^2 + 1)*(-1)^n + 1)/64.at n=38A302647
• Chessboard rectangles sequence (see Comments), also A037270 interleaved with A163102.at n=39A317714
• Nontotients (A005277) that are the product of two totients (A002202).at n=32A329872