OFFSET
1,2
COMMENTS
a(n) = Sum (A005214(k): 1 <= k <= n).
LINKS
Reinhard Zumkeller, Table of n, a(n) for n = 1..10000
MATHEMATICA
Module[{upto=500, sq, tr}, sq=Range[Floor[Sqrt[upto]]]^2; tr=Accumulate[ Range[ Floor[ (Sqrt[1+8*upto]-1)/2]]]; Accumulate[Union[Join[tr, sq]]]] (* Harvey P. Dale, Jun 24 2018 *)
PROG
(Haskell)
a193711 n = a193711_list !! (n-1)
a193711_list = scanl1 (+) a005214_list :: [Integer]
CROSSREFS
KEYWORD
nonn
AUTHOR
Reinhard Zumkeller, Aug 03 2011
EXTENSIONS
Program and b-file corrected by Reinhard Zumkeller, Aug 04 2011
STATUS
approved