83700

Appears in sequences

• Arithmetic derivative of cubes: a(n) = 3*n^2*A003415(n).at n=29A068721
• Enneagonal numbers divisible by 9.at n=35A117796
• Number of 4-step one space leftwards or up, two space rightwards or down asymmetric rook's tours on an n X n board summed over all starting positions.at n=39A187299
• Number of (n+2) X 3 binary arrays avoiding patterns 001 and 101 in rows and columns.at n=27A202195
• 4*(n + 7)^3 - 27*(n + 7)^2 = (4*n +1)*(n+7)^2.at n=23A245033
• Number of 2 X 2 planar subsets in an n X n X n cube.at n=31A270205
• Numbers i such that Fibonacci(i) is divisible by i, i+1, i+2, and i+3.at n=24A298685
• Discriminants of totally real cubic fields with 2 associated nonconjugate fields.at n=16A329786
• G.f. A(x) = Sum_{n>=0} a(n)*x^n satisfies: [Sum_{n>=0} x^n/(1 - x^(n+1))]^4 = Sum_{n>=0} a(n)*x^n/(1 - x^(n+1))^4.at n=23A341375