{"schema":"vela.problem-packet.v0.1","problem":422,"statement":"Let $f(1)=f(2)=1$ and for $n>2$\\[f(n) = f(n-f(n-1))+f(n-f(n-2)).\\]Does $f(n)$ miss infinitely many integers? What is its behaviour?","status":"open","seam":"raw","closureRoutes":[],"obligations":[],"attestations":[],"attempts":[],"velaLean":[],"oeis":[{"id":"A005185","name":"Hofstadter Q-sequence: a(1) = a(2) = 1; a(n) = a(n-a(n-1)) + a(n-a(n-2)) for n > 2.","terms":"1,1,2,3,3,4,5,5,6,6,6,8,8,8,10,9,10,11,11,12,12,12,12,16,14,14,16,16,16,16,20,17,17,20,21,19,20,22,21,22,23,23,24,24,24,","url":"https://oeis.org/A005185"}],"generated_note":"derived view; the signed event log is the source of truth (vela check / vela reproduce)"}