Number of composite numbers around 9^n.
3, 3, 5, 9, 21, 73, 9, 123, 19, 15, 5, 29, 21, 47, 29, 103, 89, 11, 17, 155, 125, 41, 89, 99, 73, 173, 37, 71, 377, 175, 129, 195, 65, 113, 251, 183, 235, 397, 153, 39, 265, 347, 125, 197, 45, 145, 283, 137, 53, 157, 171, 219, 179, 91, 111, 345, 97, 83, 359
1
T. D. Noe, Plot of 1000 terms
T. D. Noe, Table of 1000 terms
(Mma) Table[NextPrime[9^n] - NextPrime[9^n, -1] - 1, {n, 50}]
nonn
T. D. Noe, Mar 09 2015