OFFSET
0,2
MATHEMATICA
Table[Sum[((k + 3)^(n - k) + k + 1)/(k + 2), {k, 0, n}], {n, 0, 25}] (* Vaclav Kotesovec, May 23 2021 *)
CROSSREFS
KEYWORD
nonn
AUTHOR
EXTENSIONS
a(14) onward corrected by Sean A. Irvine, May 22 2021
STATUS
approved