A136066 - OEIS

%I #6 Mar 16 2020 09:59:47

%S 31,61,151,181,241,271,331,421,541,601,631,691,991,1051,1171,1231,

%T 1321,1531,1621,1951,2221,2251,2341,2671,2851,2971,3331,3391,3571,

%U 3931,4021,4051,4201,4231,4591,4651,4951,5281,5581,5821,6121,6271,6301,6451,6481

%N Mother primes of order 7.

%C For smallest mother primes of order n see A136020 (also definition). For mother primes of order 1 see A091180. For mother primes of order 2 see A136061. For mother primes of order 3 see A136062. For mother primes of order 4 see A136063. For mother primes of order 5 see A136064. For mother primes of order 6 see A136065.

%H Amiram Eldar, <a href="/A136066/b136066.txt">Table of n, a(n) for n = 1..10000</a>

%t n = 7; a = {}; Do[If[PrimeQ[(Prime[k] + 2n)/(2n + 1)], AppendTo[a, Prime[k]]], {k, 1, 1500}]; a

%Y Cf. A088878, A091180, A136019, A136020, A136061, A136062, A136063, A136064, A136065, A136067, A136068, A136069, A136070.

%K nonn

%O 1,1

%A _Artur Jasinski_, Dec 12 2007