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 A067928 Numbers n such that the digits of the n-th prime begin with n. 0
 6455, 6456, 6457, 6459, 6460, 6466 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS Prime(6466) is 64661, which begins with 6466, so 6466 is a term of the sequence. The next term is greater than 4*10^41. - Robert Gerbicz, Sep 05 2002 LINKS Table of n, a(n) for n=1..6. MATHEMATICA (*returns true if a begins with b, false o.w.*) f[a_, b_] := Module[{c, d, e, g, h, i, r}, r = False; c = ToString[a]; d = ToString[b]; g = StringPosition[c, d]; h = Length[g]; If[h > 0, i = g[[h]]; If[i[[1]] == 1, r = True]]; r]; Do[If[f[Prime[n], n], Print[n]], {n, 1, 10^5} ] Select[Range[7000], Take[IntegerDigits[Prime[#]], IntegerLength[#]] == IntegerDigits[ #]&] (* Harvey P. Dale, Mar 05 2016 *) CROSSREFS Sequence in context: A105377 A248998 A256090 * A166223 A206538 A288083 Adjacent sequences: A067925 A067926 A067927 * A067929 A067930 A067931 KEYWORD base,more,nonn AUTHOR Joseph L. Pe, Feb 22 2002 STATUS approved

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Last modified July 18 15:51 EDT 2024. Contains 374388 sequences. (Running on oeis4.)