%I
%S 1,6,13,27,44,63,91,120,151,193,234,277,333,386,441,511,576,643,727,
%T 804,883,981,1070,1161,1273,1374,1477,1603,1716,1831,1971,2096,2223,
%U 2377,2514,2653,2821,2970,3121,3303,3464,3627,3823,3996,4171,4381,4566,4753,4977,5174,5373,5611,5820,6031,6283,6504,6727,6993,7226,7461,7741
%N Partial sums of A301686.
%F Conjectures from _Chai Wah Wu_, Feb 03 2021: (Start)
%F a(n) = a(n1) + 2*a(n3)  2*a(n4)  a(n6) + a(n7) for n > 6.
%F G.f.: (x^6  5*x^5  7*x^4  12*x^3  7*x^2  5*x  1)/((x  1)^3*(x^2 + x + 1)^2). (End)
%Y Cf. A301686.
%K nonn
%O 0,2
%A _N. J. A. Sloane_, Mar 25 2018
%E More terms could now be added from A301686.  _N. J. A. Sloane_, Mar 29 2018
