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 A342836 #21 Mar 26 2021 19:27:44 %S A342836 7,797,3,7,37,3023681,43,1249,7,3,23,11,3,19,3, %T A342836 13390093693131976661567,193,2069,11,41,3,71,3,996370591,3,101,1123, %U A342836 54367,159469,151,29,3,7 %N A342836 a(n) is the smallest prime factor of A342834(n). %C A342836 a(n) = A342834(n) for n = 1 and n = 2, no other solution is known. %C A342836 No primes through a(258). - _Michael S. Branicky_, Mar 25 2021 %C A342836 a(34) <= 7944676315964871787139677901. a(35)..a(40) = 2089, 11, 3, 23, 3, 11. a(42)=3. - _Chai Wah Wu_, Mar 26 2021 %H A342836 Chai Wah Wu, <a href="/A342836/a342836.txt">terms a(44)..a(84)</a> %F A342836 a(n) = A020639(A342834(n)). %e A342836 As A342834(5) = 7||97||997||9973||99991 = 797997997399991 = 37 * 951649 * 22663307, then a(5) = 37. %Y A342836 Cf. A020639, A338968, A342834, A342835. %K A342836 nonn,base,more %O A342836 1,1 %A A342836 _Bernard Schott_, Mar 24 2021 %E A342836 a(4)-a(14) from _Daniel Suteu_, Mar 24 2021 %E A342836 a(15)-a(33) from _Michael S. Branicky_ and _Apurva Rai_, Mar 25 2021