login

Year-end appeal: Please make a donation to the OEIS Foundation to support ongoing development and maintenance of the OEIS. We are now in our 61st year, we have over 378,000 sequences, and we’ve reached 11,000 citations (which often say “discovered thanks to the OEIS”).

A014461
Odd numbers in the triangle of Eulerian numbers that are not 1.
2
11, 11, 57, 57, 1191, 1191, 247, 4293, 15619, 15619, 4293, 247, 1013, 1013, 152637, 152637, 4083, 478271, 10187685, 10187685, 478271, 4083, 423281535, 423281535, 16369, 2571742175, 12843262863, 12843262863, 2571742175, 16369, 13824739
OFFSET
1,1
REFERENCES
R. L. Graham, D. E. Knuth and O. Patashnik, Concrete Mathematics. Addison-Wesley, Reading, MA, 1990, p. 254.
LINKS
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
Cf. A008292.
Sequence in context: A266705 A228768 A003876 * A111221 A241870 A243127
KEYWORD
nonn,tabf,easy
EXTENSIONS
More terms from James A. Sellers
Offset corrected by Mohammad K. Azarian, Nov 19 2008
STATUS
approved