%I #6 Aug 28 2014 03:59:13
%S 1,1,1,2,4,7,13,23,40,73,132,235,425,767,1379,2491,4495,8105,14629,
%T 26407,47647,86009,155251,280202,505771,912930,1647796,2974292,
%U 5368610,9690288,17491016,31571338,56986216,102860299,185663064,335122028,604896038,1091838582
%N Number of compositions of n such that the first part is 1 and the second differences of the parts are in {3,...,3}.
%H Alois P. Heinz, <a href="/A239553/b239553.txt">Table of n, a(n) for n = 0..1000</a>
%F a(n) ~ c * d^n, where d = 1.80500192473773030222699209897983267121107478038035391729605116..., c = 0.35357751116733859348564640393076257358506245520421137739865819... .  _Vaclav Kotesovec_, Aug 28 2014
%Y Column k=3 of A239550.
%K nonn
%O 0,4
%A _Alois P. Heinz_, Mar 21 2014
