Write the natural numbers as an infinite sequence of digits, starting at the left; a(n) is the subset (i.e., the position in this sequence of the "counting digits") of the first digit of the n-th square.
A105314
Write the natural numbers as an infinite sequence of digits, starting at the left; a(n) is the subset (i.e., the position in this sequence of the "counting digits") of the first digit of the n-th square.
Terms
- a(0) =1a(1) =4a(2) =9a(3) =22a(4) =40a(5) =62a(6) =88a(7) =118a(8) =152a(9) =190a(10) =253a(11) =322a(12) =397a(13) =478a(14) =565a(15) =658a(16) =757a(17) =862a(18) =973a(19) =1090a(20) =1213a(21) =1342a(22) =1477a(23) =1618a(24) =1765a(25) =1918a(26) =2077a(27) =2242a(28) =2413a(29) =2590
External references
- oeis: A105314