A032714 n prefixed by '6' and followed by '3' is a prime.

1, 4, 5, 7, 8, 11, 13, 14, 16, 17, 20, 26, 32, 34, 35, 37, 47, 55, 56, 65, 67, 70, 73, 76, 79, 80, 82, 83, 86, 88, 98, 104, 115, 122, 125, 128, 133, 134, 136, 140, 146, 148, 149, 154, 155, 158, 160, 161, 164, 167, 170, 172, 181, 184, 193, 200, 205, 214, 221