OFFSET
1,1
COMMENTS
Obtained from Padovan Spiral number (A134816) modulo 3 reduction periodic sequence 1112201210010, 111 112 122 220 ... fourth initialization values 220, it satisfies the same recurrence a(n) = a(n-2) + a(n-3).
LINKS
FORMULA
MATHEMATICA
RecurrenceTable[{a[n] == a[n - 2] + a[n - 3], a[1] == 2, a[2] == 2, a[3] == 0}, a, {n, 1, 48}] (* or *) CoefficientList[Series[2 x (1 + x - x^2)/(1 - x^2 - x^3), {x, 0, 47}], x] (* Michael De Vlieger, Sep 02 2016 *)
LinearRecurrence[{0, 1, 1}, {2, 2, 0}, 60] (* Harvey P. Dale, Jan 27 2023 *)
CROSSREFS
KEYWORD
nonn,easy
AUTHOR
Nicolas Bègue, Aug 26 2016
STATUS
approved