a(n) is the start of the first occurrence of n consecutive perfect powers, all of which are squares with exponents equal to 2 (A111245).

A340661

a(n) is the start of the first occurrence of n consecutive perfect powers, all of which are squares with exponents equal to 2 (A111245).

Terms

    a(0) =4a(1) =36a(2) =144a(3) =361a(4) =1369a(5) =4225a(6) =10816a(7) =17689a(8) =29929a(9) =69169a(10) =140625a(11) =166464a(12) =314721a(13) =474721a(14) =729316a(15) =1225449a(16) =1817104a(17) =2353156a(18) =3308761a(19) =4251844a(20) =5832225a(21) =8242641a(22) =10942864a(23) =13653025a(24) =17986081a(25) =23396569a(26) =28654609a(27) =35940025a(28) =43243776a(29) =53158681

External references