OFFSET
1,3
FORMULA
Apparently:
- a(1) = 1,
- a(2) = 6,
- a(2*k+1) = 8*a(2*k-1) + 3 for any k > 0,
- a(2*k+2) = 8*a(2*k) + 6 for any k > 0.
EXAMPLE
CROSSREFS
KEYWORD
nonn,base,more
AUTHOR
Rémy Sigrist, Feb 24 2021
STATUS
approved