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 A354026 #17 Jan 29 2025 22:24:41 %S A354026 7,379,14407,689431,4235659,41647747,137534083,239900179,242121643, %T A354026 349909477,1245283747,1478065891,1605314383,2500276549,2748751303, %U A354026 5618210347,7490947129,11236420693,11260421089,16948514941,29440659361,74163546829,75093609319,82188727303 %N A354026 Primes that divide some k dividing 4^k + 3^k (A045584). %C A354026 Prime p > 3 is in this sequence iff all prime factors of the multiplicative order of -3/4 modulo p belong to this sequence. %o A354026 (PARI) S=[]; forprime(p=5,oo, f=Set(factor(znorder(Mod(-3/4,p)))[,1]); if(#setintersect(S,f)==#f, S=setunion(S,[p]); print1(p,", "))); %Y A354026 Cf. A023394, A045584, A066364, A087807, A129729, A134360, A171980, A354027. %K A354026 nonn %O A354026 1,1 %A A354026 _Max Alekseyev_, May 15 2022 %E A354026 a(18)-a(24) from _Jinyuan Wang_, Jan 29 2025