This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
%I A114924 #5 Dec 29 2024 12:24:52 %S A114924 17,12491,14723,42437,57089,58193,61051,63131,63347,64553,64567,64577, %T A114924 64591,64601,64661,64679,64951,65071,65173,65293,65881,66863,69931, %U A114924 79817,99551,129083,165103,263071,284833,1407647,1515259,4303027 %N A114924 Primes p such that pi(p) is obtained by dropping one of the digits of p in decimal expansion. %C A114924 If n>31 then we can get pi(a(n)) by dropping the first digit of a(n). Next term is greater than prime(20000000). %e A114924 95517973 is in the sequence because 95517973 is prime and pi(95517973)=5517973. %t A114924 Do[h=IntegerDigits[Prime@n]; l=Length[h]; If[MemberQ[Table[ FromDigits[Drop[h, {k}]], {k, l}], n], Print[Prime@n]], {n, 20000000}] %t A114924 prpiQ[n_]:=MemberQ[FromDigits/@Table[Drop[IntegerDigits[n],{d}],{d,IntegerLength[n]}],PrimePi[n]]; Select[Prime[Range[310000]],prpiQ] (* _Harvey P. Dale_, Dec 29 2024 *) %Y A114924 Cf. A114924. %K A114924 fini,base,nonn %O A114924 1,1 %A A114924 _Farideh Firoozbakht_, Jan 14 2006