%I #9 Jun 15 2014 16:40:38
%S 2,22,38,114,219,354,3035,6182,6502,11935,22946,33122,58975,137394,
%T 865634,1060511,2604630,3041138,13633887,30516651,51664754,73000543,
%U 126052390,469204879,12224092843,14479084326,19560684367
%N From George Gilbert's marks problem: jumping 3 marks at a time (initial positions).
%D G. T. Gilbert, M. I. Krusemeyer and L. C Larson, The Wohascum Problem Book, Math. Assoc of America, 1993, Problem 103, p. 25; Solution, pp. 163-164.
%D Computed by _Marc Paulhus_
%Y Cf. A019592.
%K nonn
%O 0,1
%A _R. K. Guy_