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 A074841 Square root of n contains n as a string of digits to the immediate right of the decimal point (excluding leading zeros). 12
 8, 77, 5711, 9797, 77327, 997997, 8053139, 60755907, 62996069, 99979997, 9999799997, 71515443427, 76933604839, 93445113269, 999997999997 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS All numbers of the form (10^n-3)*(10^n+1), n > 0, are members. - Robert G. Wilson v, Aug 02 2004 LINKS Robert Tanniru, PARI Code EXAMPLE The square root of 77327 = 278.077327... MATHEMATICA f[n_] := Block[{l = Floor[ Log[10, n] + 1], rd = RealDigits[ Sqrt[n], 10, 24], id = IntegerDigits[n]}, rdd = Drop[ rd[[1]], rd[[2]]]; While[ rdd[[1]] == 0, rdd = Drop[rdd, 1]]; Take[rdd, l] == id]; Do[ If[ StringPosition[ ToString[ N[ Sqrt[n], 24]], ToString[n]] != {}, If[ f[n], Print[n]]], {n, 2, 6 10^8}] (* Robert G. Wilson v, Aug 02 2004 *) PROG (PARI) /* Uses PARI functions provided in link * Sample run uses a = [0, 12], b=10, p=2, direct=True */ GetAllGIs(0, 12, 10, 2, 1) \\ Robert Tanniru, Nov 20 2013 CROSSREFS Cf. A232086, A232110, A074762. Sequence in context: A092661 A196071 A304303 * A272208 A136954 A328467 Adjacent sequences:  A074838 A074839 A074840 * A074842 A074843 A074844 KEYWORD nonn,base,hard AUTHOR Paul Lusch, Sep 09 2002 EXTENSIONS More terms from Robert G. Wilson v, Aug 02 2004 New term a(13) inserted by Robert Tanniru, Nov 20 2013 STATUS approved

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Last modified June 17 04:44 EDT 2021. Contains 345080 sequences. (Running on oeis4.)