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

2,1

Links

Table of n, a(n) for n=2..24.

Formula

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

Mathematica

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

Crossrefs

Cf. A067479 (squares), A017936.

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

Sequence in context: A044217 A044598 A033573 * A308508 A096382 A303859

Adjacent sequences: A035073 A035074 A035075 * A035077 A035078 A035079

Keyword

nonn,base

Author

Patrick De Geest, Nov 15 1998

Status

approved