96480

Appears in sequences

• E.g.f.: x/(1-x)+log((1-x)/(1-2*x)).at n=7A052850
• If n mod 2 = 0 then a(n) = n^4/4 - 2*n^2 + 3*n; otherwise, a(n) = n^4/4 - 2*n^2 + 3*n - 5/4.at n=25A064835
• Numbers n where either n or n+1 is divisible by the numbers from 1 to 12.at n=26A131662
• Number of 3-step one or two collinear space at a time queen's tours on an n X n board summed over all starting positions.at n=21A187028
• Number of parity alternating permutations of [n] avoiding descents from odd to even numbers.at n=14A199660
• (n-1)-st elementary symmetric function of {2, 3, 3, 4, 4, 5, 5,...,Floor[(n+4)/2]}.at n=7A203154
• Number T(n,k) of parity alternating permutations of [n] with exactly k descents from odd to even numbers; triangle T(n,k), n>=0, 0<=k<=max(0,floor((n-1)/2)), read by rows.at n=50A232187
• Diagonal of rational function 1/(1 - (1 + x*y*z) * (x^2 + y^2 + z^2)).at n=8A361729