35816

Appears in sequences

• a(n) = T(2n,n), where T is the array defined in A025564.at n=7A025570
• a(n) = T(n,[ n/2 ]), where T is the array defined in A025564.at n=14A025575
• a(n) = dot_product(1,2,...,n)*(3,4,...,n,1,2).at n=45A026037
• Number of (n+4) X 7 0..1 matrices with each 5 X 5 subblock idempotent.at n=16A224685
• Number T(n,k) of permutations p of [n] with no fixed points such that |{ j : |p(j)-j| = 1 }| = k; triangle T(n,k), n >= 0, 0 <= k <= n, read by rows.at n=46A323671