a(n) is the position of first occurrence of n^2 in the concatenation of the positive integers in decimal representation.

A290647

a(n) is the position of first occurrence of n^2 in the concatenation of the positive integers in decimal representation.

Terms

    a(0) =1a(1) =4a(2) =9a(3) =22a(4) =40a(5) =62a(6) =88a(7) =83a(8) =27a(9) =190a(10) =14a(11) =322a(12) =397a(13) =478a(14) =565a(15) =658a(16) =757a(17) =37a(18) =299a(19) =1090a(20) =323a(21) =86a(22) =777a(23) =141a(24) =660a(25) =124a(26) =783a(27) =1325a(28) =443a(29) =2590

External references