

A001363


Primes in ternary.
(Formerly M1961 N0776)


5



2, 10, 12, 21, 102, 111, 122, 201, 212, 1002, 1011, 1101, 1112, 1121, 1202, 1222, 2012, 2021, 2111, 2122, 2201, 2221, 10002, 10022, 10121, 10202, 10211, 10222, 11001, 11012, 11201, 11212, 12002, 12011, 12112, 12121, 12211, 20001, 20012, 20102, 20122, 20201
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OFFSET

1,1


COMMENTS

Primes written in base 3.


REFERENCES

Archimedeans Problems Drive, Eureka, 23 (1960), 23.
N. J. A. Sloane, A Handbook of Integer Sequences, Academic Press, 1973 (includes this sequence).
N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence).


LINKS

T. D. Noe, Table of n, a(n) for n = 1..847


FORMULA

a(n) = A007089(A000040(n)).  Jonathan Vos Post, Sep 09 2006


MATHEMATICA

Table[FromDigits[IntegerDigits[Prime[n], 3]], {n, 50}] (* T. D. Noe, Jun 28 2012 *)


PROG

(PARI) a(n)=subst(Pol(digits(prime(n), 3)), 'x, 10) \\ Charles R Greathouse IV, Nov 06 2013


CROSSREFS

Analogs in other bases: A004676 (base 2), A001363 (base 3), A004678 (base 4), A004679 (base 5), A004680 (base 6), A004681 (base 7), A004682 (base 8), A004683 (base 9), A000040 (base 10), A004684 (base 11).
Cf. A072805 = Primes of form 4k+3 written in base 3.
Sequence in context: A061818 A166938 A093325 * A022367 A004686 A080139
Adjacent sequences: A001360 A001361 A001362 * A001364 A001365 A001366


KEYWORD

base,nonn,easy


AUTHOR

N. J. A. Sloane.


EXTENSIONS

More terms from James A. Sellers, May 01 2000


STATUS

approved



