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Search: id:A033043
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| A033043 |
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Numbers whose set of base 6 digits is {0,1}. |
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+0
9
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| 0, 1, 6, 7, 36, 37, 42, 43, 216, 217, 222, 223, 252, 253, 258, 259, 1296, 1297, 1302, 1303, 1332, 1333, 1338, 1339, 1512, 1513, 1518, 1519, 1548, 1549, 1554, 1555, 7776, 7777, 7782, 7783, 7812, 7813, 7818, 7819, 7992, 7993, 7998, 7999, 8028, 8029, 8034
(list; graph; listen)
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OFFSET
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0,3
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COMMENT
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Sums of distinct powers of 6.
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LINKS
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T. D. Noe, Table of n, a(n) for n=0..1023
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FORMULA
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a(n)=Sum{d(i)*6^i: i=0, 1, ..., m}, where Sum{d(i)*2^i: i=0, 1, ..., m} is the base 2 representation of n.
a(n) = A097252(n)/5.
a(2n) = 6*a(n), a(2n+1) = a(2n)+1.
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CROSSREFS
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Cf. A000695, A005836, A033043-A033052.
Row 6 of array A104257.
Adjacent sequences: A033040 A033041 A033042 this_sequence A033044 A033045 A033046
Sequence in context: A037375 A041553 A047190 this_sequence A037411 A025626 A027021
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KEYWORD
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nonn,base
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AUTHOR
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Clark Kimberling (ck6(AT)evansville.edu)
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EXTENSIONS
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Extended by Ray Chandler (rayjchandler(AT)sbcglobal.net), Aug 3 2004
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