This site is supported by donations to The OEIS Foundation.

 Please make a donation to keep the OEIS running. We are now in our 55th year. In the past year we added 12000 new sequences and reached 8000 citations (which often say "discovered thanks to the OEIS"). We need to raise money to hire someone to manage submissions, which would reduce the load on our editors and speed up editing. Other ways to donate

 Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!)
 A025198 [ (n-1)st elementary symmetric function of {sqrt(k)} ], k = 1,2,...,n. 2
 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 Adjacent sequences:  A025195 A025196 A025197 * A025199 A025200 A025201 KEYWORD nonn AUTHOR EXTENSIONS a(17) onward corrected by Sean A. Irvine, Aug 16 2019 STATUS approved

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recent
The OEIS Community | Maintained by The OEIS Foundation Inc.

Last modified December 7 22:29 EST 2019. Contains 329850 sequences. (Running on oeis4.)