|
%I #9 Oct 19 2017 10:38:25
%S 2,3,4,7,211,18362,2914913,10780552,1829413731,1676641682,
%T 21487725800101,22755817971366481,107271326364325201,
%U 7272877497848202226
%N Least number X such that the numbers from X to X+n-1 are, in some order, 1 * a prime, 2 * a prime, ..., n * a prime.
%e a(7)=2914913 because 2914913=1*2914913, 2914914=6*485819, 2914915=5*582983, 2914916=4*728729, 2914917=3*971639, 2914918=2*1457459 and 2914919=7*416417. The left factors are the integers 1 to 7; and the right factors are primes.
%Y Cf. A071367-A071372.
%K nonn,more
%O 1,1
%A _Don Reble_, May 21 2002
%E a(13)-a(14) from _Don Reble_, Sep 10 2012
|
