120420

Appears in sequences

• Number of n X n arrays of squares of integers with every 4X4 subblock summing to 4.at n=2A159202
• Number of n X n arrays of squares of integers with every (n-2)X(n-2) subblock summing to 4.at n=2A159357
• Number of binary arrays indicating the locations of trailing edge maxima of a random length-n 0..4 array extended with zeros and convolved with 1,1,1.at n=24A222434
• Number of conjugacy classes in Weyl group of type D_n.at n=25A234254
• G.f.: (Product_{j>=1} 1/(1-q^j)^2 + Product_{j>=1} 1/(1-q^(2*j)))/2.at n=27A281357
• Number of partitions of n with parts colored by {0, 1} such that the sum of colors is congruent to 1 (mod 2).at n=27A392002