OFFSET
1,1
COMMENTS
In calculating terms of this sequence, use the convention that a(n)=0 for n<=0.
This sequence is eventually, beginning with a(3128), quasilinear with quasiperiod 1402.
LINKS
Nathan Fox, Table of n, a(n) for n = 1..10000
Nathan Fox, Hofstadter-like Sequences over Nonstandard Integers", Talk given at the Rutgers Experimental Mathematics Seminar, November 10 2016.
Nathan Fox, Formula for a(n)
MATHEMATICA
a[1] = 57; a[2] = 2; a[n_] := a[n] = If[n < 1, 0, a[n-a[n-1]] + a[n-a[n-2]]];
Array[a, 100] (* Paolo Xausa, May 31 2024 *)
CROSSREFS
KEYWORD
nonn
AUTHOR
Nathan Fox, Nov 13 2016
STATUS
approved