A154866 Primes p such that smallest digit of p is odd and smallest digit of prime(p) is also odd.

3, 5, 7, 11, 13, 17, 31, 37, 41, 43, 53, 71, 73, 83, 113, 131, 137, 139, 149, 151, 157, 167, 191, 193, 199, 211, 241, 251, 271, 281, 331, 347, 349, 353, 359, 397, 491, 521, 541, 569, 571, 577, 593, 599, 613, 631, 659, 661, 691, 719, 733, 743, 773, 797, 821, 853, 857, 859

Offset

1,1

Links

Harvey P. Dale, Table of n, a(n) for n = 1..1000

Mathematica

sdoQ[n_]:=OddQ[Min[IntegerDigits[n]]]; Select[Prime[Range[200]], sdoQ[#] && sdoQ[ Prime[ #]]&] (* Harvey P. Dale, Mar 21 2013 *)

Crossrefs

Cf. A000040, A155026.

Sequence in context: A024883 A024328 A032529 * A106284 A126145 A206864

Adjacent sequences: A154863 A154864 A154865 * A154867 A154868 A154869

Keyword

nonn,base,less

Author

Juri-Stepan Gerasimov, Jan 16 2009

Extensions

Keyword:base added and sequence extended by R. J. Mathar, Mar 29 2010

Status

approved