OFFSET
1,3
LINKS
Andrey Zabolotskiy, Table of n, a(n) for n = 1..8191
A. A. Kirillov, A Tale of Two Fractals, Birkhäuser, 2013, doi:10.1007/978-0-8176-8382-5. See chapter 3, in particular Table 3.1.
FORMULA
a(n) = (b(n+1) - 2*b(n) + b(n-1)) / 3, where b(n) = A336877(n).
a(2*n) = a(n), a(2*n-1) + a(2*n+1) = 3*a(n).
CROSSREFS
KEYWORD
sign
AUTHOR
Andrey Zabolotskiy, Aug 06 2020
STATUS
approved