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 A373334 #7 Jun 17 2024 07:00:54 %S A373334 3,7,16,23,37,59,1031,97,521,149,536870923,211,144115188075855872,307, %T A373334 65536,1847,8209,1087,147573952589676412928,907,524309,1151, %U A373334 549755813911,4201,17179869209,2503,16411,2999,131101,1361,34359738368,5623,18014398509481984,8501,33554467,9587 %N A373334 a(n) is the least prime power (A246655) P such that P-n is the next smaller prime power below P. %C A373334 If powers of primes (A000961) were used instead of A246655, a(1) would be 2. %F A373334 a(n) = A290515(n) + n for n > 1. %Y A373334 Cf. A246655, A057820, A110968, A290515, A000961. %K A373334 nonn %O A373334 1,1 %A A373334 _Hugo Pfoertner_, Jun 16 2024