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 A249827 #17 Nov 12 2024 09:04:42 %S A249827 5,25,35,125,55,175,65,625,245,275,85,875,95,325,385,3125,115,1225, %T A249827 145,1375,455,425,155,4375,605,475,1715,1625,185,1925,205,15625,595, %U A249827 575,715,6125,215,725,665,6875,235,2275,265,2125,2695,775,295,21875,845,3025,805,2375,305,8575,935,8125,1015,925,335,9625,355,1025,3185,78125,1045,2975,365 %N A249827 Row 3 of A246278: replace in 2n each prime factor p(k) with prime p(k+2). %H A249827 Antti Karttunen, <a href="/A249827/b249827.txt">Table of n, a(n) for n = 1..10000</a> %F A249827 a(n) = A003961(A249734(n)). %F A249827 a(n) = A003961(A016945(A048673(n)-1)). %F A249827 a(n) = A084967(A249824(n)). [Permutation of A084967.] %o A249827 (Scheme) %o A249827 (define (A249827 n) (A003961 (A249734 n))) %o A249827 (define (A249827 n) (A246278bi 3 n)) ;; Alternative implementation. Code for A246278bi given in A246278. %Y A249827 Row 3 of A246278. %Y A249827 Cf. A003961, A016945, A048673, A084967, A249824, A249734. %K A249827 nonn %O A249827 1,1 %A A249827 _Antti Karttunen_, Nov 23 2014