230131

Appears in sequences

• Triangle, read by rows, where T(n,k) equals the number of permutations of {1..n+1} with [(nk+k)/2] inversions for n>=k>=0.at n=49A128564
• Triangle, read by rows, where T(n,k) equals the number of permutations of {1..n+1} with [(nk+k)/2] inversions for n>=k>=0.at n=50A128564
• Number of reduced words of length n in the Weyl group A_9.at n=20A161457
• Number of reduced words of length n in the Weyl group A_9.at n=25A161457