Consider a number n with m decimal digits. The sequence lists the numbers n having the prefix of length m-1 in the middle of the decimal expansion of n^2.

A242942

Consider a number n with m decimal digits. The sequence lists the numbers n having the prefix of length m-1 in the middle of the decimal expansion of n^2.

Terms

    a(0) =23a(1) =25a(2) =27a(3) =405a(4) =441a(5) =505a(6) =605a(7) =705a(8) =760a(9) =805a(10) =905a(11) =1005a(12) =2005a(13) =2434a(14) =3005a(15) =37600a(16) =61613a(17) =62500a(18) =67947a(19) =128891a(20) =132715a(21) =156255a(22) =5654702a(23) =6375451a(24) =9256309a(25) =9376000a(26) =17135260a(27) =379188333a(28) =382287618a(29) =393413185

External references