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 A074978 #17 Apr 14 2021 05:29:06 %S A074978 6447,529271,569513,996733,53172153,837071903,53552588203, %T A074978 445839739269,6130987583999 %N A074978 Prime(prime(n)) ends with n. %e A074978 prime(prime(6447)) = 806447, prime(prime(529271))=138529271, prime(prime(569513))=150569513, prime(prime(996733))=283996733. Next (if any) n > 6000000. %e A074978 prime(prime(53172153)) = 23953172153. prime(prime(837071903)) = 489837071903. prime(prime(53552588203)) = 43853552588203. - _Chai Wah Wu_, Apr 05 2021 %e A074978 prime(prime(445839739269)) = 424445839739269, prime(prime(6130987583999)) = 6926130987583999. - _Chai Wah Wu_, Apr 13 2021 %Y A074978 Prime(n) ending with n in A046883. %K A074978 nonn,base,more %O A074978 1,1 %A A074978 _Zak Seidov_, Oct 06 2002 %E A074978 a(5)-a(7) from _Chai Wah Wu_, Apr 05 2021 %E A074978 a(8)-a(9) from _Chai Wah Wu_, Apr 13 2021