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 A086863 a(n)=floor{square((1*n^0+1*n^1+2*n^2+4*n^3)/(1*n^0+2*n^1+1*n^2))} 0

%I

%S 4,22,66,137,238,370,533,727,953,1211,1500,1821,2174,2559,2976,3424,

%T 3905,4418,4962,5538,6147,6787,7460,8164,8900,9668,10469,11301,12165,

%U 13061,13989,14950,15942,16966,18022,19110,20230,21383,22567,23783

%N a(n)=floor{square((1*n^0+1*n^1+2*n^2+4*n^3)/(1*n^0+2*n^1+1*n^2))}

%e a(2)=floor{square((1*2^0+1*2^1+2*2^2+4*2^3)/(1*2^0+2*2^1+1*2^2))}=floor{square(4.77778)}=floor(22.8272)=22

%Y Cf. A086790, A085899.

%K easy,nonn

%O 1,1

%A Wang Dan (wangdan01(AT)lycos.com), Aug 20 2003

%E Definition corrected by _M. F. Hasler_, Jul 23 2007

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Last modified December 8 02:32 EST 2021. Contains 349590 sequences. (Running on oeis4.)