1387680

Appears in sequences

• Numbers k that, when expressed in base 4 and then interpreted in base 7, give a multiple of k.at n=14A062922
• Triangle read by rows, coefficients of a family of orthogonal polynomials, T(n, k) for 0 <= k <= n.at n=39A321966
• Triangle read by rows: T(n, k) = n! * 3^k * hypergeom([-k], [-n], 2/3).at n=39A375600