A011547 Decimal expansion of sqrt(2) truncated to n places.

1, 14, 141, 1414, 14142, 141421, 1414213, 14142135, 141421356, 1414213562, 14142135623, 141421356237, 1414213562373, 14142135623730, 141421356237309, 1414213562373095, 14142135623730950

Offset: 0

Author

N. J. A. Sloane

Keywords

• nonn
• base

References

• W. Rudin, Principles of Mathematical Analysis, 3rd ed., McGraw-Hill, 1976.

Links

• Vincenzo Librandi, Table of n, a(n) for n = 0..200

Crossrefs

Cf. A011548.

Programs

Mathematica

With[{sqrt2=N[Sqrt[2],30]},Table[IntegerPart[sqrt2 10^n],{n,0,20}]] (* Harvey P. Dale, Sep 22 2011 *)
IntegerPart[Table[N[Sqrt[2], k] 10^(k - 1), {k, 20}]] (* Vincenzo Librandi, Aug 16 2013 *)