A035076 a(n) is root of square starting with digit 9: first term of runs.

30, 95, 300, 949, 3000, 9487, 30000, 94869, 300000, 948684, 3000000, 9486833, 30000000, 94868330, 300000000, 948683299, 3000000000, 9486832981, 30000000000, 94868329806, 300000000000, 948683298051, 3000000000000

Offset: 2

Author

Patrick De Geest, Nov 15 1998

Keywords

• nonn
• base

Crossrefs

Cf. A067479 (squares), A017936.

Cf. 2: A035069, 3: A035070, 4: A035071, 5: A035072, 6: A035073, 7: A035074, 8: A035075.

Programs

Mathematica

Ceiling[Sqrt[9*10^Range[2,30]]] (* Harvey P. Dale, Aug 07 2013 *)

Formula

a(n) = ceiling(sqrt(9*10^n)), n > 1.