2016000

Appears in sequences

• Coefficients of polynomials S(n,x) related to Springer numbers.at n=12A098432
• Bishops on an n X n board (see Robinson paper for details).at n=18A122748
• Number of cells in the 2nd rows of all deco polyominoes of height n. A deco polyomino is a directed column-convex polyomino in which the height, measured along the diagonal, is attained only in the last column.at n=8A134437
• a(n)=2a(n-1) but when sum of digits of 2a(n-1) is greater than 9 take a(n) = largest number < 2a(n-1) which has sum of digits = 9.at n=21A140134
• Triangle read by rows: T(n,k) is the number of permutations of {1,2,...,n} with maximal number of initial entries of the same parity equal to k (1 <= k <= ceiling(n/2)).at n=25A152878
• a(n) = Sum (J(p): p is a permutation of {1,2,...,n}), where J(p) is the number of j <= ceiling(n/2) such that p(j) + p(n+1-j) = n+1.at n=9A155519
• a(0) = 1 and a(n) = A180000(n)*a(floor(n/2))^2 for n > 0.at n=20A205958
• Triangle S(n,k) by rows: coefficients of 4^((n-1)/2)*(x^(1/4)*d/dx)^n when n=1,3,5,...at n=25A223527
• Triangular array: row n gives the coefficients of the polynomial p(n,x) defined in Comments.at n=37A249247
• Expansion of 140*x*(1 + 4*x + x^2) / (1 - x)^5.at n=14A317984
• Array T(n, m) read by ascending antidiagonals: denominators of shifted Fubini numbers F(n, m) where m >= 0.at n=32A338876
• Obverse convolution (n!)**A000045; see Comments.at n=5A374875
• Variance of n-th power of a standard normal random variable.at n=7A376922