28814

Appears in sequences

• a(n) = 2 * Sum_{k=0..n-1} binomial(n-1, k)*binomial(n+k, k).at n=7A002003
• Coordination sequence for 7-dimensional cubic lattice.at n=7A008415
• Quadruples of different integers from [ 1,n ] with no common factors between triples.at n=33A015625
• Numbers k such that k*(k+3) is a palindrome.at n=11A028553
• Number of points of L1 norm 7 in cubic lattice Z^n.at n=7A035601
• Convolution of A055852 with A011782.at n=8A055853
• Sum of terms in n-th row of A077164.at n=30A077167
• Number of symmetric Schroeder paths of length 2n (A Schroeder path of length 2n is a lattice path from (0,0) to (2n,0) consisting of U=(1,1), D=(1,-1) and H=(2,0) steps and never going below the x-axis).at n=13A110110
• Triangle read by rows: T(n,k) (0 <= k <= n) is the number of Delannoy paths of length n that start with exactly k (0,1) steps (or, equivalently, with exactly k (1,0) steps).at n=28A110171
• Row sums of A123160.at n=7A123164
• Floor(Pi^n-n^Pi).at n=8A174174
• Number of uhd and uHd in all weighted lattice paths B(n).at n=15A247296
• Expansion of Product_{k>=1} (1 + k^2*x^k)/(1 - k^2*x^k).at n=9A265844
• Numbers k such that A019320(k) is in A217468.at n=39A297412
• Numbers k such that 2^m == 2 (mod m*(m-1)), where m=A019320(k).at n=50A297413
• Square array T(n,k), n >= 0, k >= 0, read by antidiagonals, where T(n,k) is the coefficient of x^(k*n) in expansion of ( (1 + x)/(1 - x) )^n.at n=43A336521
• Length of row n in A347317.at n=27A347318
• Square array read by ascending antidiagonals: T(n,k) = [x^(n*k)] ((1 + x)/(1 - x))^k for n, k >= 1.at n=27A363418