Primes in carryless arithmetic mod 10 in which all digits except the rightmost are even.
21, 23, 25, 27, 29, 41, 43, 45, 47, 49, 61, 63, 65, 67, 69, 81, 83, 85, 87, 89, 201, 209
1 seqfan posts
Thu Aug 19 12:00:06 CEST 2010 [seqfan] Similar sequences A059270, A163396 and A133767 (mod 27)