Number of subsets of {1,...,n} containing n and having at least one set partition into 4 blocks with equal element sum.
A248113
Number of subsets of {1,...,n} containing n and having at least one set partition into 4 blocks with equal element sum.
Terms
- a(0) =1a(1) =2a(2) =6a(3) =14a(4) =37a(5) =88a(6) =218a(7) =515a(8) =1226a(9) =2848a(10) =6566a(11) =14997a(12) =33483a(13) =74406a(14) =162422a(15) =351621a(16) =751171a(17) =1594028
External references
- oeis: A248113