cp's OEIS Frontend

A296076 Least number with the same prime signature as 1 + A002322(n), where A002322 is Carmichael's lambda.

%I A296076 #6 Dec 05 2017 21:21:56
%S A296076 2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,6,2,2,2,2,2,2,4,2,2,
%T A296076 2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,6,2,2,2,2,6,2,2,2,2,2,2,2,2,2,2,2,2,2,
%U A296076 2,2,2,2,2,2,6,2,2,2,2,2,6,2,2,2,2,2,2,2,2,2,2,2,2,2,2,4,2,2,2,6,2,2,2,2,2,2,2,2,2,6,2,2,2,2,12,2,2,2,4,2
%N A296076 Least number with the same prime signature as 1 + A002322(n), where A002322 is Carmichael's lambda.
%H A296076 Antti Karttunen, <a href="/A296076/b296076.txt">Table of n, a(n) for n = 1..65537</a>
%F A296076 a(n) = A046523(A263027(n)) = A046523(1+A002322(n)).
%o A296076 (PARI)
%o A296076 A046523(n) = { my(f=vecsort(factor(n)[, 2], , 4), p); prod(i=1, #f, (p=nextprime(p+1))^f[i]); };  \\ This function from _Charles R Greathouse IV_, Aug 17 2011
%o A296076 A296076(n) = A046523(1+lcm(znstar(n)[2]));
%Y A296076 Cf. A002322, A046523, A263027, A263028 (positions of 2's), A296077, A296078.
%K A296076 nonn
%O A296076 1,1
%A A296076 _Antti Karttunen_, Dec 05 2017