STATUS
proposed
approved
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Revision History for A004167
(Bold, blue-underlined text is an addition; faded, red-underlined text is aShowing entries 1-10 | older changes
STATUS
editing
proposed
PROG
return int(str(3**n)[::-1]) # Chai Wah Wu, Feb 19 2021
PROG
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approved
editing
STATUS
editing
approved
CROSSREFS
Cf. A000244.
The following are parallel families: A000079 (2^n), A004094 (2^n reversed), A028909 (2^n sorted up), A028910 (2^n sorted down), A036447 (double and reverse), A057615 (double and sort up), A263451 (double and sort down); A000244 (3^n), A004167 (3^n reversed), A321540 (3^n sorted up), A321539 (3^n sorted down), A163632 (triple and reverse), A321542 (triple and sort up), A321541 (triple and sort down).
STATUS
approved
editing
STATUS
editing
approved
LINKS
Alois P. Heinz, <a href="/A004167/b004167.txt">Table of n, a(n) for n = 0..1000</a>
MAPLE
a:= n-> (s-> parse(cat(s[-i]$i=1..length(s))))(""||(3^n)):
seq(a(n), n=0..50); # Alois P. Heinz, Apr 09 2015
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approved
editing
STATUS
proposed
approved
STATUS
editing
proposed