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A025198 [ (n-1)st elementary symmetric function of {sqrt(k)} ], k = 1,2,...,n. 1
1, 2, 5, 13, 35, 97, 285, 877, 2834, 9564, 33627, 122806, 464672, 1817558, 7334633, 30482068, 130254931, 571484549, 2571058232, 11846898542, 55849085590, 269103224044, 1324099844979, 6647523600943, 34025303476040, 177434113736861 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,2
LINKS
MAPLE
SymmPolyn := proc(L::list, n::integer)
local c, a, sel;
a :=0 ;
sel := combinat[choose](nops(L), n) ;
for c in sel do
a := a+mul(L[e], e=c) ;
end do:
a;
end proc:
A025198 := proc(n)
[seq(sqrt(k), k=1..n)] ;
SymmPolyn(%, n-1) ;
floor(%) ;
end proc: # R. J. Mathar, Sep 23 2016
CROSSREFS
Sequence in context: A082582 A086581 A059027 * A221205 A037247 A308273
KEYWORD
nonn
AUTHOR
EXTENSIONS
a(17) onward corrected by Sean A. Irvine, Aug 16 2019
STATUS
approved

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Last modified March 18 22:56 EDT 2024. Contains 370952 sequences. (Running on oeis4.)