95616

Appears in sequences

• a(n) = Sum_{k=0..n} k!*(n - k)!.at n=8A003149
• High-temperature expansion of susceptibility mu_2 for cubic lattice.at n=4A010043
• Triangle read by rows: T(n,k) = Sum_{j>=0} j!*T(n-j-1, k-1) for n >= 0, k >= 0.at n=57A084938
• Number of 4 X n (0,1) matrices such that each row and each column is nondecreasing or nonincreasing.at n=17A086114
• Ninth diagonal (m=8) of triangle A084938; a(n) = A084938(n+8,n) = (n^8 + 84*n^7 + 3346*n^6 + 84840*n^5 + 1550689*n^4 + 21632436*n^3 + 224782284*n^2 + 1377648720*n)/40320.at n=2A090394
• a(n) = permanent of the n-th principal submatrix of the rectangular array whose odd-numbered rows are (2,1,2,1,2,1,2,1,...) and even-numbered rows are (1,2,1,2,1,2,1,2,...).at n=7A383212