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A020454 Primes that contain digits 1 and 6 only. 1
11, 61, 661, 6661, 11161, 16111, 16661, 66161, 111611, 161611, 611111, 616111, 1111661, 1611161, 1616161, 1616611, 1661111, 1661161, 1666111, 6111661, 6116111, 6116161, 6161161, 6611611, 6661111, 6661661, 11111161, 11166611, 11616611 (list; graph; refs; listen; history; internal format)
OFFSET

1,1

CROSSREFS

Sequence in context: A068846 A092164 A088545 * A009016 A191596 A052051

Adjacent sequences:  A020451 A020452 A020453 * A020455 A020456 A020457

KEYWORD

nonn,base

AUTHOR

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

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Last modified February 16 04:47 EST 2012. Contains 205860 sequences.