%I
%S 1,4,2,5,3,6,9,7,10,8,11,14,12,15,13,16,19,17,20,18,21,24,22,25,23,26,
%T 29,27,30,28,31,34,32,35,33,36,39,37,40,38,41,44,42,45,43,46,49,47,50,
%U 48,51,54,52,55,53,56,59,57,60,58,61,64,62,65,63,66,69,67,70,68,71,74
%N "Greedy Dragons" permutation of the natural numbers, inverse of A065186.
%H Michael De Vlieger, <a href="/A065187/b065187.txt">Table of n, a(n) for n = 1..10000</a>
%H <a href="/index/Per#IntegerPermutation">Index entries for sequences that are permutations of the natural numbers</a>
%F From _Chai Wah Wu_, Oct 23 2017: (Start)
%F a(1) = 1, a(2) = 4, a(3) = 2, a(4) = 5, a(5) = 3; for n > 5, a(n) = a(n5) + 5.
%F a(n) = a(n1) + a(n5)  a(n6) for n > 6.
%F G.f.: x*(2*x^5  2*x^4 + 3*x^3  2*x^2 + 3*x + 1)/((x  1)*(x^5  1)). (End)
%t Rest@ CoefficientList[Series[x (2 x^5  2 x^4 + 3 x^3  2 x^2 + 3 x + 1)/((x  1) (x^5  1)), {x, 0, 72}], x] (* _Michael De Vlieger_, Oct 23 2017 *)
%K nonn
%O 1,2
%A _Antti Karttunen_, Oct 19 2001
