362592

Appears in sequences

• a(n) is the total number of down steps between the first and second up steps in all 3_2-Dyck paths of length 4*n.at n=7A334650
• Triangle read by rows: T(n, k) is the number of n X n symmetric Toeplitz matrices of rank k using all the integers 0, 1, 2, ..., n-1.at n=44A364790
• a(n) is the number of n X n nonsingular symmetric Toeplitz matrices using all the integers 0, 1, 2, ..., n-1.at n=8A364791