login
Numbers k such that A002034(d) < A002034(k) for all the proper divisors d of k.
5

%I #10 Jul 04 2021 15:54:57

%S 1,2,3,4,5,7,9,11,13,16,17,19,23,25,27,29,31,32,37,41,43,47,49,53,59,

%T 61,67,71,73,79,83,89,97,101,103,107,109,113,121,125,127,131,137,139,

%U 149,151,157,163,167,169,173,179,181,191,193,197,199,211,223,227,229,233,239,241,243,251,256,257,263,269,271,277,281

%N Numbers k such that A002034(d) < A002034(k) for all the proper divisors d of k.

%H <a href="/index/Fa#factorial">Index entries for sequences related to factorial numbers</a>

%o (PARI) isA345944(n) = (1==A345950(n));

%Y Subsequence of A000961.

%Y Cf. A000040 (subsequence), A002034, A345945 (complement).

%Y Positions of 1's in A345935 and in A345950 (characteristic function).

%Y Cf. also A344881.

%K nonn

%O 1,2

%A _Antti Karttunen_, Jul 04 2021