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

A340662

a(n) is the end 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) =49a(2) =196a(3) =484a(4) =1681a(5) =4900a(6) =12100a(7) =19600a(8) =32761a(9) =73984a(10) =148225a(11) =175561a(12) =328329a(13) =492804a(14) =753424a(15) =1258884a(16) =1860496a(17) =2405601a(18) =3374569a(19) =4330561a(20) =5929225a(21) =8363664a(22) =11088900a(23) =13823524a(24) =18190225a(25) =23639044a(26) =28933641a(27) =36264484a(28) =43612816a(29) =53582400

External references