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%I #15 Apr 19 2024 02:00:04
%S 1,1,1,1,2,3,2,4,3,4,5,5,5,5,6,7,7,7,7,8,9,8,10,9,10,11,11,11,11,12,
%T 13,13,13,13,14,15,14,16,15,16,17,17,17,17,18,19,19,19,19,20,21,20,22,
%U 21,22,23,23,23,23,24,25,25,25,25,26,27,26,28,27,28,29,29,29,29,30,31,31
%N Number of successive terms of A028356 that add to n; or length of n-th term of A028355.
%D Suggested by _R. K. Guy_, Mar 01, 2002.
%H Seiichi Manyama, <a href="/A068962/b068962.txt">Table of n, a(n) for n = 1..10000</a>
%F Each group of 15 terms is 6 more than the previous group.
%F Conjectures from _Chai Wah Wu_, Apr 18 2024: (Start)
%F a(n) = a(n-1) + a(n-15) - a(n-16) for n > 16.
%F G.f.: x*(x^14 + x^10 + x^9 - x^8 + 2*x^7 - x^6 + x^5 + x^4 + 1)/(x^16 - x^15 - x + 1). (End)
%Y Cf. A028355, A028356.
%K nonn,easy,changed
%O 1,5
%A _N. J. A. Sloane_, Apr 08 2002
%E More terms from Jim McCann (jmccann(AT)umich.edu), Jul 16 2002
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