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A030291 Primes with at most two different digits. 7
2, 3, 5, 7, 11, 13, 17, 19, 23, 29, 31, 37, 41, 43, 47, 53, 59, 61, 67, 71, 73, 79, 83, 89, 97, 101, 113, 131, 151, 181, 191, 199, 211, 223, 227, 229, 233, 277, 311, 313, 331, 337, 353, 373, 383, 433, 443, 449, 499, 557, 577, 599, 661, 677, 727, 733 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

T. D. Noe, Table of n, a(n) for n = 1..1000

MATHEMATICA

Select[Range[1000], PrimeQ[#] && Length[Union[RealDigits[#][[1]]]] <= 2 &]

Select[Prime[Range[200]], Count[DigitCount[#], 0]>7&] (* Harvey P. Dale, Jul 14 2017 *)

CROSSREFS

Cf. A032758.

Sequence in context: A069675 A049585 A049549 * A242541 A052085 A082646

Adjacent sequences:  A030288 A030289 A030290 * A030292 A030293 A030294

KEYWORD

nonn,base,easy

AUTHOR

Patrick De Geest

EXTENSIONS

Offset corrected by Arkadiusz Wesolowski, Sep 13 2011

STATUS

approved

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Last modified July 12 05:35 EDT 2020. Contains 335658 sequences. (Running on oeis4.)