OFFSET
1,1
REFERENCES
R. L. Graham, D. E. Knuth and O. Patashnik, Concrete Mathematics. Addison-Wesley, Reading, MA, 1990, p. 254.
LINKS
Vincenzo Librandi, Table of n, a(n) for n = 1..1050
MATHEMATICA
Select[Select[Flatten[Table[Plus@@Table[(-1)^k Binomial[i + 1, k] (j - k)^i, {k, 0, j}], {i, 1, 18}, {j, 1, i}]], OddQ], #!= 1 &] (* Vincenzo Librandi, Nov 19 2018 *)
CROSSREFS
KEYWORD
nonn,tabf,easy
AUTHOR
EXTENSIONS
More terms from James A. Sellers
Offset corrected by Mohammad K. Azarian, Nov 19 2008
STATUS
approved