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Least number with the same prime signature as sigma(n)+1.
5

%I #7 Dec 08 2017 16:59:07

%S 2,4,2,8,2,2,4,16,6,2,2,2,6,4,4,32,2,24,6,2,6,2,4,2,32,2,2,6,2,2,6,64,

%T 4,6,4,12,6,2,6,6,2,2,12,6,2,2,4,8,6,6,2,12,6,4,2,4,16,6,2,4,12,2,30,

%U 128,6,6,6,2,2,6,2,36,12,6,8,6,2,4,16,6,6,2,6,36,2,6,4,2,6,6,2,4,6,6,4,6,12,12,2,6,2,6,30,2,2

%N Least number with the same prime signature as sigma(n)+1.

%H Antti Karttunen, <a href="/A296092/b296092.txt">Table of n, a(n) for n = 1..65537</a>

%F a(n) = A046523(A088580(n)) = A046523(1+A000203(n)).

%o (Scheme) (define (A296092 n) (A046523 (+ 1 (A000203 n))))

%Y Cf. A000203, A046523, A088580, A296212.

%Y Cf. also A276528, A296076, A296078, A296085, A296091.

%K nonn

%O 1,1

%A _Antti Karttunen_, Dec 07 2017