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A001357 Powers of 2 written in base 9.
(Formerly M1138 N0434)
2
1, 2, 4, 8, 17, 35, 71, 152, 314, 628, 1357, 2725, 5551, 12212, 24424, 48848, 108807, 218715, 438531, 878162, 1867334, 3845668, 7802447, 16705005, 34511011, 70122022, 150244044, 310488088, 621087187, 1342185385, 2684381781, 5478773672, 12068657454, 24148426018 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

REFERENCES

Archimedeans Problems Drive, Eureka, 14 (1951), 13.

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 = 0..300

MATHEMATICA

Table[FromDigits[IntegerDigits[2^n, 9]], {n, 0, 30}] (* T. D. Noe, Jun 28 2012 *)

PROG

(PARI) {for(ixp=0, 34,

casi = 2^ixp; cvst=0;

while(casi != 0,

cvd = casi%9; cvst=10*cvst + cvd + 1; casi = (casi - cvd) / 9 );

while(cvst !=0,

ptch = cvst%10; print1(ptch-1); cvst = (cvst - ptch) / 10 );

print1(", "))} /* Douglas Latimer, Apr 23 2012 */

CROSSREFS

Sequence in context: A266897 A018094 A293331 * A058520 A127680 A136750

Adjacent sequences:  A001354 A001355 A001356 * A001358 A001359 A001360

KEYWORD

easy,base,nonn

AUTHOR

N. J. A. Sloane.

EXTENSIONS

More terms from Douglas Latimer, Apr 16 2012

STATUS

approved

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Last modified March 24 01:20 EDT 2019. Contains 321444 sequences. (Running on oeis4.)