OFFSET
0,5
FORMULA
Conjecture: G.f.: -x^3*(1+x^2)*(x^4-x^2+1) / ( (1+x) *(x^4-x^3+x^2-x+1) *(x^4+x^3+x^2+x+1) *(x-1)^3 ). - R. J. Mathar, Mar 08 2016
MAPLE
A056864 := proc(n)
floor(n^2/10+1/2) ;
end proc:
seq(A056864(n), n=0..100) ; # R. J. Mathar, Mar 08 2016
MATHEMATICA
Table[Floor[n^2/10+1/2], {n, 0, 100}] (* Harvey P. Dale, Nov 01 2020 *)
PROG
(PARI) a(n) = round(n^2/10); \\ Michel Marcus, Mar 08 2016
CROSSREFS
KEYWORD
nonn
AUTHOR
N. J. A. Sloane, Sep 02 2000
STATUS
approved