Number of subsets of {1,...,n} containing n and having at least one set partition into 3 blocks with equal element sum.
A232534
Number of subsets of {1,...,n} containing n and having at least one set partition into 3 blocks with equal element sum.
Terms
- a(0) =0a(1) =0a(2) =0a(3) =0a(4) =1a(5) =2a(6) =5a(7) =12a(8) =29a(9) =63a(10) =146a(11) =329a(12) =722a(13) =1613a(14) =3505a(15) =7567a(16) =16119a(17) =34194a(18) =71455a(19) =148917a(20) =307432a(21) =631816a(22) =1290905a(23) =2628736a(24) =5330368
External references
- oeis: A232534