1,2
a(1)=1 because second digit (2 is prime) of Pi is 1,
a(2)=4, becasue third digit (3 is prime) of Pi is 4,
a(3)=5 because fifth digit (5 is prime) of Pi is 5, ...
Sequence in context: A105662 A021225 A090201 this_sequence A118472 A111624 A019815
Adjacent sequences: A130141 A130142 A130143 this_sequence A130145 A130146 A130147
nonn,base
Jani Melik (jani_melik(AT)hotmail.com), Aug 01 2007
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