>>6025050>602505025050 get
did you know that 25050 and the square of 25050 (627502500) only use the digits 0, 2, 5, 6 and 7
did you know that 25050 = T(n,k) for k=0..3 is the k-th component of the vector obtained by multiplying the n-th power of the 4 X 4 matrix (1,1,1,1; 7,3,1,0; 12,2,0,0; 6,0,0,0) with the vector (1,1,1,1) when n is 21?
