|
%I #17 Dec 06 2014 14:19:00
%S 6,30,50,144,300,560,610,650,660,714,780,810,816,870,1120,1176,1190,
%T 1806,2130,2470,2490,2550,2922,3030,3240,3330,3390,3480,3600,3620,
%U 3840,4266,4368,5796,5850,6270,6786,6954,7074,7710,8280,9400,9990,10146,10350,10380,10530,10660,11064
%N Terms k of A249667 such that k-A151799(k) = A151800(k)-k.
%e 610 is in A249667: the least prime>610 is 613, and 610+613=1223 is prime; the largest prime<610 is 607, and 610+607=1217 is prime. Also, 613-610=610-607=3, then 610 is in the current sequence.
%o (PARI) {for(i=3,2*10^4,m=nextprime(i+1);k=i+m;n=precprime(i-1);q=i+n;if(isprime(k)&&isprime(q)&&m-i==i-n,print1(i,", ")))}
%Y Cf. A249624, A249666, A249667.
%K nonn
%O 1,1
%A _Antonio Roldán_, Dec 03 2014
|
