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 A371307 #47 May 04 2024 09:25:47 %S A371307 135,32,8,8,245,12,16,16,1089,15,72,24,468,28,32,32,108,24,48,40,98, %T A371307 44,144,39,1800,52,392,35,27869,60,64,64,45,68,216,72,162,76,400,48, %U A371307 75809,48,968,88,4590,92,288,60,238,100,1352,104,242,63,120,112,143370,72,1800,120,640,124,105 %N A371307 The smallest nonpalindromic number in base n that shares the same prime divisors as its digit reversal in base n. %C A371307 The largest value in the first 500 terms is a(478) = 109443357. %H A371307 Scott R. Shannon, <a href="/A371307/b371307.txt">Table of n, a(n) for n = 2..500</a> %e A371307 a(2) = 135 as 135 = 3^3 * 5 = 10000111_2 whose digit reversal is 11100001_2 = 225 = 3^2 * 5^2, both of which have 3 and 5 as prime divisors. %e A371307 a(10) = 1089 as 1089 = 3^2 * 11^2 whose digit reversal is 9801 = 3^4 * 11^2, both of which have 3 and 11 as prime divisors. See also A110819. %e A371307 a(14) = 468 as 468 = 2^2 * 3^2 * 13 = 256_14 whose digit reversal is 652_14 = 1248 = 2^5 * 3 * 13, both of which have 2, 3, and 13 as prime divisors. %Y A371307 Cf. A110819, A372488, A372384, A027746. %K A371307 nonn,base %O A371307 2,1 %A A371307 _Scott R. Shannon_, May 03 2024