OFFSET
1,2
COMMENTS
Periodic with period 24. The cycle is in reverse order to that of the digital roots of the Fibonacci numbers (A030132).
LINKS
Index entries for linear recurrences with constant coefficients, signature (0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1).
FORMULA
MATHEMATICA
digRoot[n_]:=FixedPoint[Total[IntegerDigits[#, 10]] &, n] ; digRoot/@LinearRecurrence[{8, -8}, {1, 8}, 100] (* Amiram Eldar, Nov 29 2018 *)
PROG
CROSSREFS
KEYWORD
nonn,base,easy
AUTHOR
Ondrej Janicko, Nov 27 2018
STATUS
approved