30312

Appears in sequences

• arcsin(arcsinh(x)+arcsin(x))=2*x+8/3!*x^3+306/5!*x^5+30312/7!*x^7...at n=3A013086
• Triangle T, read by rows, where column k of T equals (k+1)*(column k of T^2) when shifted to have an initial '1'; i.e., T(n,k) = (k+1)*[T^2](n-1,k) for n>k>=0, with T(n,n)=1 for n>=0.at n=29A123305
• Column 1 of triangle A123305.at n=6A123307
• Number of ways to place 5 nonattacking knights on an n X n toroidal board.at n=5A172532
• Number of k-element subsets S of {1,...,n} such that mean(S) is not equal to median(S).at n=14A212140
• Number of (n+1) X (n+1) 0..6 arrays with every 2 X 2 subblock having its diagonal sum differing from its antidiagonal sum by 4, with no adjacent elements equal (constant-stress tilted 1 X 1 tilings).at n=2A235099
• Number of (n+1) X (3+1) 0..6 arrays with every 2 X 2 subblock having its diagonal sum differing from its antidiagonal sum by 4, with no adjacent elements equal (constant-stress tilted 1 X 1 tilings).at n=2A235102
• T(n,k) is the number of (n+1) X (k+1) 0..6 arrays with every 2 X 2 subblock having its diagonal sum differing from its antidiagonal sum by 4, with no adjacent elements equal (constant-stress tilted 1 X 1 tilings).at n=12A235107
• Lexicographically earliest sequence of nonnegative integers such that two distinct terms differ by at least 4 decimal digits.at n=26A346000
• Numbers t which satisfy the equation: t mod k = floor((t - k)/k) mod k (1 <= k <= t) only for k = 1 and t.at n=28A375007