27184

Appears in sequences

• Row sums of triangle defined in A113820.at n=39A160968
• Numbers n such that T(n) + T(n+1) + ... + T(n+26) is a square, where T = A000217 (triangular numbers).at n=19A257709
• Number of length n arrays of permutations of 0..n-1 with each element moved by -n to n places and every three consecutive elements having its maximum within 3 of its minimum.at n=22A263690
• Numbers k such that gcd(2*k^7+1, 3*k^3+2) > 1.at n=23A369153
• Square array T(n, k) read by rising antidiagonals. Row n has the ordinary generating function (-(n*x^3-(n+1)*x^2+x) + sqrt((n*x^3-(n+1)*x^2+x)^2 - 4*(x^3-x^2)*((n+1)*x^2-x)))/(2*(x^3-x^2)).at n=85A377441