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A030144 Primes in which parity of digits alternates. +0
5
2, 3, 5, 7, 23, 29, 41, 43, 47, 61, 67, 83, 89, 101, 103, 107, 109, 127, 149, 163, 167, 181, 307, 347, 349, 367, 383, 389, 503, 509, 521, 523, 541, 547, 563, 569, 587, 701, 709, 727, 743, 761, 769, 787, 907, 929, 941, 947, 967, 983, 2129, 2141, 2143, 2161, 2309 (list; graph; listen)
OFFSET

0,1

EXAMPLE

2129 is a term as 2, 1, 2 and 9 have even and odd parity alternately.

CROSSREFS

Sequence in context: A038603 A106116 A091727 this_sequence A068690 A069556 A113611

Adjacent sequences: A030141 A030142 A030143 this_sequence A030145 A030146 A030147

KEYWORD

nonn,base

AUTHOR

Patrick De Geest (pdg(AT)worldofnumbers.com)

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Last modified August 19 23:53 EDT 2008. Contains 142930 sequences.


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