Search: id:A101059
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%I A101059
%S A101059 2,8,16,152,193,640,674,1460
%N A101059 Indices of primes in sequence defined by A(0) = 87, A(n) = 10*A(n-1) 
               - 53 for n > 0.
%C A101059 Numbers n such that (730*10^n + 53)/9 is prime.
%C A101059 Numbers n such that digit 8 followed by n >= 0 occurrences of digit 1 
               followed by digit 7 is prime.
%C A101059 Numbers corresponding to terms <= 674 are certified primes.
%D A101059 Klaus Brockhaus and Walter Oberschelp, Zahlenfolgen mit homogenem Ziffernkern, 
               MNU 59/8 (2006), pp. 462-467.
%F A101059 a(n) = A103072(n) - 1. - Herman Jamke (hermanjamke(AT)fastmail.fm), Jan 
               01 2008
%e A101059 8117 is prime, hence 2 is a term.
%o A101059 (PARI) a=87;for(n=0,1500,if(isprime(a),print1(n,","));a=10*a-53)
%o A101059 (PARI) for(n=0,1500,if(isprime((730*10^n+53)/9),print1(n,",")))
%Y A101059 Cf. A000533, A002275.
%Y A101059 Sequence in context: A099888 A046161 A092978 this_sequence A101658 A006573 
               A009662
%Y A101059 Adjacent sequences: A101056 A101057 A101058 this_sequence A101060 A101061 
               A101062
%K A101059 nonn,hard,more
%O A101059 1,1
%A A101059 Klaus Brockhaus (klaus-brockhaus(AT)t-online.de) and Walter Oberschelp 
               (oberschelp(AT)informatik.rwth-aachen.de), Nov 30 2004

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