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%I #9 Oct 30 2022 06:48:24
%S 1,3,5,7,9,12,15,18,21,24,28,31,35,39,43,47,51,56,60,65,69,74,79,84,
%T 89,94,100,105,111,116,122,128,133,139,145,151,158,164,170,177,183,
%U 190,196,203,210,217,223,230,238,245,252,259,267,274,281,289,297,304,312,320,328,336
%N a(n) = floor( Sum_{k=1..n} sqrt(k+1) ).
%t Table[Floor[Sum[Sqrt[k + 1], {k, n}]], {n, 80}] (* _Wesley Ivan Hurt_, Oct 30 2022 *)
%o (PARI) a(n) = floor(sum(k=1, n, sqrt(k+1))) \\ _Michel Marcus_, Mar 24 2013
%K nonn
%O 1,2
%A _Clark Kimberling_
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