%I #7 Feb 27 2023 08:07:31
%S 3,10,21,35,53,75,101,130,163,200,241,285,333,385,440,499,562,629,699,
%T 773,851,933,1018,1107,1200,1297,1397,1501,1609,1720,1835,1954,2077,
%U 2203,2333,2467,2605,2746,2891,3040,3193,3349,3509,3673,3840,4011
%N Sum{floor(j*(2+sqrt(3))) : 1<=j<=n}; n-th partial sum of Beatty sequence for 2+sqrt(3).
%t c[n_] := Sum[Floor[j*(2+Sqrt[3])], {j, 1, n}];
%t c = Table[c[n], {n, 1, 90}]
%Y Cf. A003512 (Beatty sequence for 2+sqrt(3)).
%K nonn
%O 1,1
%A _Clark Kimberling_, Aug 17 2011