ROSECODE 186
Dividing septuplets
Find all 1 < a < b < c < d < e < f < g (integer) septuplets for that
(a-1)*(b-1)*(c-1)*(d-1)*(e-1)*(f-1)*(g-1)
divides a*b*c*d*e*f*g-1.
Answer format: cnt,s
where cnt is the number of solutions and s is the sum of a+b+c+d+e+f+g values over all solutions.
My timing: 2 min.
divides a*b*c*d*e*f*g-1.
Answer format: cnt,s
where cnt is the number of solutions and s is the sum of a+b+c+d+e+f+g values over all solutions.
My timing: 2 min.