%I #9 Jun 15 2014 16:39:34
%S 2,4,47,233,477,538,1163,4544,23938,47952,74329,385194,424332,838758,
%T 3601963,8880674,9376182,10177957,10622608,12051969,14306604,23190118,
%U 25373883,28661729,138953419,1150488807,1204511338
%N From George Gilbert's marks problem: jumping 4 marks at a time (final 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.
%Y Cf. A019595.
%K nonn
%O 0,1
%A _R. K. Guy_ (computed by _Marc Paulhus_).