A363004 Number of sequences of n distinct positive integers whose Gilbreath transform is (1, 1, ..., 1).

1, 1, 1, 1, 2, 7, 40, 355, 4819, 99242, 3049155, 138762035

Offset: 0

Author

Pontus von Brömssen, May 13 2023

Keywords

• nonn
• more

Examples

			For n = 5, the a(5) = 7 sequences are:
  (1, 2, 4, 6,  8),
  (1, 2, 4, 6, 10),
  (1, 2, 4, 8,  6),
  (1, 2, 4, 8, 10),
  (1, 2, 4, 8, 12),
  (1, 2, 4, 8, 14),
  (1, 2, 4, 8, 16).
		

Crossrefs

Cf. A080839 (increasing sequences), A363002 (nondecreasing sequences), A363003, A363005 (distinct integers).