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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
4, 22, 66, 137, 238, 370, 533, 727, 953, 1211, 1500, 1821, 2174, 2559, 2976, 3424, 3905, 4418, 4962, 5538, 6147, 6787, 7460, 8164, 8900, 9668, 10469, 11301, 12165, 13061, 13989, 14950, 15942, 16966, 18022, 19110, 20230, 21383, 22567, 23783 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
LINKS
EXAMPLE
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
CROSSREFS
Sequence in context: A189953 A174814 A106846 * A241689 A052149 A062966
KEYWORD
easy,nonn
AUTHOR
Wang Dan (wangdan01(AT)lycos.com), Aug 20 2003
EXTENSIONS
Definition corrected by M. F. Hasler, Jul 23 2007
STATUS
approved

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Last modified April 20 12:36 EDT 2024. Contains 371844 sequences. (Running on oeis4.)