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A034099
Fractional part of square root of a(n) starts with digit 3.
2
11, 19, 29, 40, 54, 69, 70, 87, 88, 107, 108, 128, 129, 152, 153, 177, 178, 179, 205, 206, 207, 235, 236, 237, 266, 267, 268, 300, 301, 302, 335, 336, 337, 338, 373, 374, 375, 376, 413, 414, 415, 416, 454, 455, 456, 457, 498, 499, 500, 501, 543, 544, 545
OFFSET
1,1
LINKS
Michael De Vlieger, Table of n, a(n) for n = 1..10000 (first 1001 terms from Harvey P. Dale)
MATHEMATICA
is3Q[n_]:=Module[{c=RealDigits[Sqrt[n], 10, 10+IntegerLength[n]], d}, d=c[[2]]+1; c[[1, d]]==3]; Select[Range[600], is3Q] (* Harvey P. Dale, Jul 13 2019 *)
Select[Range[600], NumberDigit[Sqrt[#], -1]==3&] (* Harvey P. Dale, Sep 20 2023 *)
CROSSREFS
Cf. A034109.
Sequence in context: A053032 A342961 A277123 * A034109 A155070 A080821
KEYWORD
nonn,easy,base
AUTHOR
Patrick De Geest, Sep 15 1998
STATUS
approved