OFFSET
1,2
COMMENTS
Appears to be all positive integers for n>1, suggesting the possibility of a combinatorial interpretation.
LINKS
Jair Taylor, Table of n, a(n) for n = 1..497
MATHEMATICA
Table[Integrate[Cyclotomic[n, x]/Exp[x], {x, 0, Infinity}], {n, 1, 20}] (* Vaclav Kotesovec, Mar 01 2020 *)
PROG
(Sage)
for n in range(1, 40):
print(integral(e^(-x)*cyclotomic_polynomial(n), x, 0, infinity))
CROSSREFS
KEYWORD
nonn
AUTHOR
Jair Taylor, Apr 11 2012
STATUS
approved