

A109733


Sequence (written here in base 10) is its own ASCII representation.


2



53, 51, 53, 49, 53, 51, 52, 57, 53, 51, 53, 49, 53, 50, 53, 55, 53, 51, 53, 49, 53, 51, 52, 57, 53, 51, 53, 48, 53, 51, 53, 53, 53, 51, 53, 49, 53, 51, 52, 57, 53, 51, 53, 49, 53, 50, 53, 55, 53, 51, 53, 49, 53, 51, 52, 56, 53, 51, 53, 49, 53, 51, 53, 51, 53, 51, 53, 49, 53
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OFFSET

1,1


COMMENTS

The octal version of this idea is simply 66,66,66,66,.., not interesting.


LINKS

Table of n, a(n) for n=1..69.


FORMULA

I conjecture that a(n) = 53 when n is congruent to 1, 3 or 5 (mod 8) and a(n) = 51 when n is congruent to 2 (mod 8).  Jonathan Cross (jcross(AT)juggler.net), Oct 14 2005


EXAMPLE

a(1) = 53 (decimal) = 65 (octal) => '5',
a(2) = 51 (decimal) = 63 (octal) => '3',
a(3) = 53 (decimal) = 65 (octal) => '5',
a(4) = 49 (decimal) = 61 (octal) => '1', etc.


PROG

(PARI) a(n) = (valuation(1+n>>n=valuation(n, 2), 2)%5!=3)+56(n3)%5*2 \\  M. F. Hasler, Jun 20 2011


CROSSREFS

Cf. A109648.
Sequence in context: A171132 A104936 A109648 * A094462 A232125 A042403
Adjacent sequences: A109730 A109731 A109732 * A109734 A109735 A109736


KEYWORD

easy,nonn,base


AUTHOR

N. J. A. Sloane and Nadia Heninger, Aug 10 2005


EXTENSIONS

More terms from Jonathan Cross (jcross(AT)juggler.net), Oct 14 2005


STATUS

approved



