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 A097644 Numbers n such that pi(n)=reversal(n). 0
 51, 130, 370, 8201, 73270, 82080, 26113610, 4854248220, 37682961610 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS This sequence has only two odd terms, i.e. 51 and 8201 and 10 divides all other terms. Next term is greater than 10^8. LINKS EXAMPLE 26113610 is in the sequence because pi(26113610)=1631162=reversal(26113610). MATHEMATICA Do[If[PrimePi[m]==FromDigits[Reverse[IntegerDigits[m]]], Print[m]], {m, 100000000}] CROSSREFS Cf. A037171, A069215. Sequence in context: A063314 A129298 A065010 * A044302 A044683 A348000 Adjacent sequences:  A097641 A097642 A097643 * A097645 A097646 A097647 KEYWORD base,nonn AUTHOR Farideh Firoozbakht, Aug 25 2004 EXTENSIONS Two more terms from Giovanni Resta, Feb 06 2006 STATUS approved

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Last modified January 22 21:47 EST 2022. Contains 350504 sequences. (Running on oeis4.)