OFFSET
0,3
LINKS
Vincenzo Librandi, Table of n, a(n) for n = 0..100
FORMULA
a(n) = A108396(n,n).
E.g.f.: (exp(x) * x - LambertW(-x)/(1 + LambertW(-x))^3) / 2. - Vaclav Kotesovec, Jan 03 2019
PROG
(Magma) [n*(1+n^n)/2: n in [0..25]]; // Vincenzo Librandi, Apr 29 2011
(Haskell)
a108398 n = n * (1 + n ^ n) `div` 2 -- Reinhard Zumkeller, Mar 31 2015
CROSSREFS
KEYWORD
nonn
AUTHOR
Reinhard Zumkeller, Jun 02 2005
STATUS
approved