539648

Appears in sequences

• Number of 2 X 2 matrices with entries in {0,1,...,n} and even trace with no entries repeated.at n=33A280056
• Triangle read by rows. T(n,k) is the number of direct sum decompositions of GF(2)^n into subspaces of dimension at most k, 1<=k<=n.at n=12A298561