171072

Appears in sequences

• A convolution triangle of numbers generalizing Pascal's triangle A007318.at n=22A049327
• Number of ways to place n nonattacking composite pieces rook + rider[4,4] on an n X n chessboard.at n=8A189840
• a(n) = 12*a(n-1) - 12*a(n-2), a(0)=0, a(1)=1.at n=6A190873
• Number of compositions of n, where the difference between the number of odd parts and the number of even parts is 1.at n=21A242499
• Theta series of the 12-dimensional lattice of hyper-roots D_3(SU(3)).at n=13A288488
• Numbers with a record number of distinct values of the Euler totient function applied to their divisors (A319696).at n=32A328858
• Triangle read by rows, T(n, k) = [x^k] p(n), where p(n) = (1 - hypergeom([-1/2, -n - 1, -n - 1], [1, 1], 4*x)) / (2*x).at n=42A367025