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A107613 Numbers n such that both n and prime(n) consist of square digits (0,1,4,9). 1
94, 1140, 9109, 10404, 10449, 41104, 110000, 110010, 114101, 910140, 910190, 910191, 940111, 940141, 940409, 11049914, 94011001, 94011004, 94019941, 94019990, 94109190, 94109191, 94440910, 190004449, 190011049, 190011090, 190011091, 190011909, 190011999, 190149101 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Corresponding primes are: 491, 9199, 94441, 109441, 109919, 494441, 1441049, 1441199, 1499149, which form a subsequence of A061246 (primes with square digits).

LINKS

Chai Wah Wu, Table of n, a(n) for n = 1..216

MATHEMATICA

Do[id=Union[IntegerDigits[Prime[n]], IntegerDigits[n]]; If[Count[id, 2]+Count[id, 3]+Count[id, 5]+Count[id, 6]+Count[id, 7]+Count[id, 8]==0, Print[n]], {n, 200000}]

CROSSREFS

Cf. A061246.

Sequence in context: A086248 A196892 A093294 * A220797 A220961 A218648

Adjacent sequences:  A107610 A107611 A107612 * A107614 A107615 A107616

KEYWORD

nonn,base

AUTHOR

Zak Seidov, May 17 2005

EXTENSIONS

a(10)-a(30) from Chai Wah Wu, Jan 30 2019

STATUS

approved

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Last modified March 24 12:14 EDT 2019. Contains 321448 sequences. (Running on oeis4.)