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a(n) = ceiling(((1*n^0 + 1*n^1 + 2*n^2 + 4*n^3)/(1*n^0 + 2*n^1 + 1*n^2))^2).
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%I #14 Jul 04 2019 18:54:33

%S 4,23,67,138,239,371,534,728,954,1212,1501,1822,2175,2560,2977,3425,

%T 3906,4419,4963,5539,6148,6788,7461,8165,8901,9669,10470,11302,12166,

%U 13062,13990,14951,15943,16967,18023,19111,20231,21384,22568

%N a(n) = ceiling(((1*n^0 + 1*n^1 + 2*n^2 + 4*n^3)/(1*n^0 + 2*n^1 + 1*n^2))^2).

%t Table[Ceiling[((1+n+2n^2+4n^3)/(1+2n+n^2))^2],{n,40}] (* _Harvey P. Dale_, Jun 14 2011 *)

%Y Cf. A085899, A086790, A086814, A086822.

%K easy,nonn

%O 1,1

%A Wang Dan (wangdan01(AT)lycos.com), Aug 19 2003

%E Corrected by _M. F. Hasler_, Jul 23 2007