A034103 Fractional part of square root of a(n) starts with digit 7.

3, 14, 23, 33, 45, 46, 60, 76, 77, 95, 96, 115, 116, 137, 138, 139, 162, 163, 188, 189, 190, 217, 218, 219, 247, 248, 249, 279, 280, 281, 282, 314, 315, 316, 350, 351, 352, 353, 389, 390, 391, 392, 429, 430, 431, 432, 471, 472, 473, 474, 475, 516, 517, 518

Offset

1,1

Links

Harvey P. Dale, Table of n, a(n) for n = 1..1000

Mathematica

Select[Range[600], NumberDigit[Sqrt[#], -1]==7&] (* Harvey P. Dale, Dec 29 2024 *)

Prog

(PARI) for(k=1, 520, my(s=sqrt(k), d=floor(10*(s-floor(s)))); if(d==7, print1(k, ", "))) \\ Hugo Pfoertner, Aug 05 2020

Crossrefs

Cf. A034113.

Sequence in context: A024473 A024598 A019001 * A034113 A099853 A019002

Adjacent sequences: A034100 A034101 A034102 * A034104 A034105 A034106

Keyword

nonn,easy,base

Author

Patrick De Geest, Sep 15 1998

Extensions

a(52) corrected by Sean A. Irvine, Aug 03 2020

Status

approved