cp's OEIS Frontend

A219997 Decades whose prime pattern is same as the prime pattern in the previous decade, with at least one prime.

%I A219997 #7 Dec 08 2012 02:16:48
%S A219997 38,79,125,140,155,181,235,277,289,292,311,332,437,445,500,533,559,
%T A219997 610,617,625,649,697,707,718,751,821,857,874,895,952,962,974,1048,
%U A219997 1073,1100,1115,1189,1271,1310,1348,1352,1357,1367,1384,1415,1420,1430,1448,1474
%N A219997 Decades whose prime pattern is same as the prime pattern in the previous decade, with at least one prime.
%H A219997 V. Raman, <a href="/A219997/b219997.txt">Table of n, a(n) for n = 1..10000</a>
%F A219997 a(n) >> n log^2 n.
%F A219997 a(n) = A216329(n) + 1.
%o A219997 (PARI) for(i=2, 1500, if(isprime(10*i-9)==isprime(10*i+1)&&isprime(10*i-7)==isprime(10*i+3)&&isprime(10*i-3)==isprime(10*i+7)&&isprime(10*i-1)==isprime(10*i+9)&&isprime(10*i+1)+isprime(10*i+3)+isprime(10*i+7)+isprime(10*i+9)>=1, print1(i", ")))
%Y A219997 Cf. A190639.
%Y A219997 Cf. A216329 (lower decade).
%K A219997 nonn,base
%O A219997 1,1
%A A219997 _V. Raman_, Dec 07 2012