4966929

Appears in sequences

• Base 3 digits are, in order, the first n terms of the periodic sequence with initial period 1,0,0.at n=14A033139
• Base 9 digits are, in order, the first n terms of the periodic sequence with initial period 1,0,3.at n=7A037595
• The number of tilings of an equilateral triangle of side length n with k lozenges and n^2 - 2*k unit triangles. Triangle T(n, k) with n >= 1 and 0 <= k <= n*(n + 1)/2, read by rows.at n=38A273464