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Row 3 of A246278: replace in 2n each prime factor p(k) with prime p(k+2).
3

%I #13 Dec 13 2014 00:39:52

%S 5,25,35,125,55,175,65,625,245,275,85,875,95,325,385,3125,115,1225,

%T 145,1375,455,425,155,4375,605,475,1715,1625,185,1925,205,15625,595,

%U 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 Row 3 of A246278: replace in 2n each prime factor p(k) with prime p(k+2).

%H Antti Karttunen, <a href="/A249827/b249827.txt">Table of n, a(n) for n = 1..10000</a>

%F a(n) = A003961(A249734(n)).

%F a(n) = A003961(A016945(A048673(n)-1).

%F a(n) = A084967(A249824(n)). [Permutation of A084967.]

%o (Scheme)

%o (define (A249827 n) (A003961 (A249734 n)))

%o (define (A249827 n) (A246278bi 3 n)) ;; Alternative implementation. Code for A246278bi given in A246278.

%Y Row 3 of A246278.

%Y Cf. A003961, A016945, A048673, A084967, A249824, A249734.

%K nonn

%O 1,1

%A _Antti Karttunen_, Nov 23 2014