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 A052148 #24 Sep 17 2024 20:56:42
%S A052148 12,102,1002,1079,10002,17525,100002,1000002,3124739,10000002,
%T A052148 100000002,175247525,1000000002,1078012079,1087921979
%N A052148 Integers k < (reversal of k) such that (reversal of k) + 1 is divisible by k-1.
%C A052148 Numbers 31247524739, 1752475247525, 312475247524739, 1078012078012079, 1078021987912079, 1087912078021979, 1087921987921979, 17524752475247525, and 3124752475247524739 are somewhere in the sequence. - _Ed Pegg Jr_, Sep 17 2024
%e A052148 For k = 12, the reversal of k is 21, 12-1 = 11, 21+1 = 22 and 11 divides 22.
%t A052148 Select[Range[10^7],# < FromDigits[Reverse[IntegerDigits[#]]] && Divisible[FromDigits[Reverse[IntegerDigits[#]]]+1,#-1]&] (* _Stefano Spezia_, May 29 2024 *)
%o A052148 (PARI) isok(n) = {d = digits(n); revn = sum(i = 1, #d, d[i]*10^(i - 1)); (revn > n) && (n!=1) && ((revn + 1) % (n - 1) == 0);} \\ _Michel Marcus_, Aug 22 2013
%Y A052148 Cf. A004086.
%K A052148 nonn,base,more
%O A052148 1,1
%A A052148 Mary L. Sellers (sellersm(AT)cedarville.edu), Jan 22 2000
%E A052148 a(8)-a(11) from _Naohiro Nomoto_, Jun 24 2001
%E A052148 a(12)-a(15) from _Sean A. Irvine_, Oct 26 2021