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A030588
Write odd numbers in base 6 and juxtapose.
16
1, 3, 5, 1, 1, 1, 3, 1, 5, 2, 1, 2, 3, 2, 5, 3, 1, 3, 3, 3, 5, 4, 1, 4, 3, 4, 5, 5, 1, 5, 3, 5, 5, 1, 0, 1, 1, 0, 3, 1, 0, 5, 1, 1, 1, 1, 1, 3, 1, 1, 5, 1, 2, 1, 1, 2, 3, 1, 2, 5, 1, 3, 1, 1, 3, 3, 1, 3, 5, 1, 4, 1, 1, 4, 3, 1, 4, 5, 1, 5, 1, 1, 5, 3, 1, 5, 5, 2, 0, 1
OFFSET
1,2
LINKS
EXAMPLE
From Antti Karttunen, Dec 26 2018: (Start)
The first twelve odd numbers and their base-6 representations (A007092) are:
1 1
3 3
5 5
7 11
9 13
11 15
13 21
15 23
17 25
19 31
21 33
23 35
thus the sequence begins with terms 1, 3, 5, 1, 1, 1, 3, 1, 5, 2, 1, 2, 3, 2, 5, 3, 1, 3, 3, 3, 5.
(End)
MATHEMATICA
Flatten[Table[IntegerDigits[2n - 1, 6], {n, 50}]] (* Harvey P. Dale, Jul 22 2012 *)
PROG
(PARI)
up_to = 100000;
A030588list(up_to) = { my(v=vector(up_to), ds=List([]), o=1, j=1); for(i=1, up_to, if(j>#ds, ds=digits(o, 6); j=1; o+=2); v[i] = ds[j]; j++); (v); };
v030588 = A030588list(up_to);
A030588(n) = v030588[n]; \\ Antti Karttunen, Dec 24 2018
(Scala) (1 to 99 by 2).map(Integer.toString(_, 6).toCharArray).flatten // Alonso del Arte, Apr 02 2020
KEYWORD
nonn,base,easy
STATUS
approved