A300748 - OEIS

%I #13 Mar 12 2018 03:49:15

%S 3,5,7,13,17,41,43,53,101,109,113,151,211,281,307,331,337,461,617,727,

%T 739,827,1033,1301,1481,1531,1723,1901,2161,2351,2381,2633,2647,2801,

%U 3371,3931,4933,5653,5743,6791,6917,7561,8059,9521,10369,11503,11551,12161,17579,17839,18433,20593,21061,23581,26731,30241

%N Least prime divisor of A300629(n).

%C For m > 2, A135720(m) = A083876(m-1) if and only if a(n) = prime(m).

%H Max Alekseyev, <a href="/A300748/b300748.txt">Table of n, a(n) for n = 1..138</a>

%F a(n) = A020639(A300629(n)).

%Y Cf. A002997, A020639, A083876, A285549, A300629.

%K nonn

%O 1,1

%A _Max Alekseyev_, Mar 11 2018