A032709 n prefixed by '9' and followed by '1' is a prime.

1, 4, 7, 9, 15, 16, 18, 22, 24, 28, 31, 34, 37, 39, 42, 43, 46, 49, 51, 52, 55, 60, 63, 66, 72, 78, 79, 81, 85, 87, 90, 93, 94, 108, 112, 114, 115, 129, 133, 138, 141, 154, 157, 159, 162, 163, 169, 171, 177, 178, 180, 181, 184, 192, 195, 196, 204, 205, 211, 222

Offset

0,2

Links

Table of n, a(n) for n=0..59.

Crossrefs

Sequence in context: A210497 A010383 A010403 * A243172 A370523 A024797

Adjacent sequences: A032706 A032707 A032708 * A032710 A032711 A032712

Keyword

nonn,base

Author

Patrick De Geest, May 15 1998

Status

approved