396396

Appears in sequences

• Coefficients of Legendre polynomials.at n=6A002463
• Number of 3 X 3 X 3 triangular nonnegative integer arrays with all sums of an element and its neighbors <= n.at n=21A166189
• a(n) = C(2n,n)*C(2n+2,n+1)/(n+2).at n=6A172392
• Number of (n+2) X 6 binary arrays avoiding patterns 001 and 101 in rows and columns.at n=8A202198
• Irregular triangle read by rows: T(n,k) = number of "pat" permutations of [1..n] with k descents.at n=72A212206
• Triangle T(n,m) = C(2*m-1,m)*C(n+2*m-1,n-m).at n=52A338037
• a(n) is the smallest number whose divisors include exactly n that can be written in the form m + reverse(m), for some m (A067030).at n=45A358513
• Triangle read by rows: T(n, k) = binomial(2*k, k) * binomial(2*n, n) / (n + 1).at n=34A379100