Number of partitions of the set {1,2,...,n} having no blocks with all entries of the same parity.
A124425
Number of partitions of the set {1,2,...,n} having no blocks with all entries of the same parity.
Terms
- a(0) =1a(1) =0a(2) =1a(3) =1a(4) =3a(5) =7a(6) =25a(7) =79a(8) =339a(9) =1351a(10) =6721a(11) =31831a(12) =179643a(13) =979567a(14) =6166105a(15) =37852039a(16) =262308819a(17) =1784037031a(18) =13471274401a(19) =100285059751a(20) =818288740923
External references
- oeis: A124425