Triangle read by rows: T(p_1,p_2) = maximal period of a decimal fraction (r/s)*(t/u) given that r/s has period p_1 and t/u has period p_2 (1 <= p_1 <= p_2).
A278588
Triangle read by rows: T(p_1,p_2) = maximal period of a decimal fraction (r/s)*(t/u) given that r/s has period p_1 and t/u has period p_2 (1 <= p_1 <= p_2).
Terms
- a(0) =9a(1) =18a(2) =198a(3) =27a(4) =54a(5) =2997a(6) =36a(7) =396a(8) =108a(9) =39996a(10) =45a(11) =90a(12) =135a(13) =180a(14) =499995a(15) =54a(16) =594a(17) =5994a(18) =3564a(19) =270a(20) =5999994a(21) =63a(22) =126a(23) =189a(24) =252a(25) =315
External references
- oeis: A278588