OFFSET
1,1
FORMULA
a(n) = A003278(2n).
PROG
(Python)
def A356426(n): return int(bin((n<<1)-1)[2:], 3)+1 # Chai Wah Wu, Sep 07 2022
CROSSREFS
KEYWORD
nonn
AUTHOR
Arie Bos, Aug 07 2022
STATUS
approved