

A215092


a(n) = Sum_{i=0..m} d(i)*3^i, where Sum_{i=0..m} d(i)*6^i is the base6 representation of n.


1



1, 2, 3, 4, 5, 3, 4, 5, 6, 7, 8, 6, 7, 8, 9, 10, 11, 9, 10, 11, 12, 13, 14, 12, 13, 14, 15, 16, 17, 15, 16, 17, 18, 19, 20, 9, 10, 11, 12, 13, 14, 12, 13, 14, 15, 16, 17, 15, 16, 17, 18, 19, 20, 18, 19, 20, 21, 22, 23, 21, 22, 23, 24, 25, 26, 24, 25, 26, 27, 28, 29, 18
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OFFSET

1,2


LINKS



FORMULA

a(n) = 3*a(n/6) if n == 0 (mod 6); otherwise a(n) = a(n1)+1.


MATHEMATICA

Table[FromDigits[RealDigits[n, 6], 3], {n, 0, 100}]


PROG

(Magma) [n eq 1 select 1 else n mod 6 eq 0 select 3*Self(n div 6) else Self(n1)+1: n in [1..72]]; // Bruno Berselli, Jan 25 2018


CROSSREFS



KEYWORD

nonn,base,easy


AUTHOR



STATUS

approved



