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A020461 Primes that contain digits 3 and 4 only. 4
3, 43, 433, 443, 3343, 3433, 33343, 333433, 334333, 343333, 343433, 444343, 444443, 3333433, 3343343, 3343433, 3344333, 3344443, 3433333, 3434443, 3443443, 3444443, 4344443, 4433333, 4434343, 4443433, 34333333, 34434343, 34444343, 43444433 (list; graph; refs; listen; history; internal format)
OFFSET

1,1

CROSSREFS

Cf. A054356.

Sequence in context: A197609 A199346 A199340 * A036940 A099664 A173770

Adjacent sequences:  A020458 A020459 A020460 * A020462 A020463 A020464

KEYWORD

nonn,base

AUTHOR

David W. Wilson (davidwwilson(AT)comcast.net)

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Last modified February 14 15:39 EST 2012. Contains 205635 sequences.