Number of maximal collections of pairwise disjoint subsets {X,Y,Z} of {1, 2, ..., n} with X + Y = Z (as in A002849), with the property that n is in one of the subsets.
A002848
Number of maximal collections of pairwise disjoint subsets {X,Y,Z} of {1, 2, ..., n} with X + Y = Z (as in A002849), with the property that n is in one of the subsets.
Terms
- a(0) =0a(1) =0a(2) =0a(3) =1a(4) =1a(5) =2a(6) =2a(7) =3a(8) =7a(9) =15a(10) =12a(11) =30a(12) =8a(13) =32a(14) =164a(15) =21a(16) =114a(17) =867a(18) =3226a(19) =720a(20) =4414a(21) =24412a(22) =4079a(23) =31454a(24) =3040a(25) =25737a(26) =252727a(27) =20505a(28) =191778a(29) =2140186
External references
- oeis: A002848