Numbers n such that 8*9^n +1 is prime.

Terms

a(0) =1a(1) =4a(2) =5a(3) =11a(4) =26a(5) =29a(6) =38a(7) =65a(8) =166a(9) =490a(10) =641a(11) =2300a(12) =9440a(13) =44741a(14) =65296a(15) =161930a(16) =586240