OFFSET
2,1
COMMENTS
Conjecture: If n = 3*k - 1 (>2), a(n) = A000567(k). For example, a(29) = 10 * (3*10 - 2) = 280.
CROSSREFS
KEYWORD
nonn,base
AUTHOR
Seiichi Manyama, Sep 28 2018
EXTENSIONS
a(19) and a(31)-a(40) from Giovanni Resta, Oct 02 2018
STATUS
approved