A119615 Write down the primes 2,3,5,... but omit any prime (such as 23 or 31 or 71 ...) that has appeared as a string earlier in the sequence.

2, 3, 5, 7, 11, 13, 17, 19, 29, 37, 41, 43, 47, 53, 59, 61, 67, 73, 79, 83, 89, 97, 101, 103, 107, 109, 127, 137, 139, 149, 151, 157, 163, 173, 179, 181, 191, 193, 197, 199, 211, 223, 227, 229, 233, 239, 241, 251, 257, 263, 269, 277, 281, 283, 307, 311, 313, 331

Offset: 0

Author

Gil Broussard, Jun 05 2006

Keywords

• base
• easy
• nonn

Comments

Inspired by Hannah Rollman and her sequence A048991.

Examples

			23 is omitted since we see "2,3" at the beginning of the sequence; 15647 is omitted because 5641, 5647 appear earlier in the sequence.
		

Crossrefs

Cf. A048991.