a(n) is the number of equivalence classes of triples of sets each with n or fewer elements where two triples are equivalent if the number of elements in all intersections is the same.
A319777
a(n) is the number of equivalence classes of triples of sets each with n or fewer elements where two triples are equivalent if the number of elements in all intersections is the same.
Terms
- a(0) =1a(1) =15a(2) =100a(3) =436a(4) =1459a(5) =4069a(6) =9929a(7) =21871a(8) =44426a(9) =84494a(10) =152171a(11) =261749a(12) =432906a(13) =692102a(14) =1074198a(15) =1624314a(16) =2399943a(17) =3473337a(18) =4934182a(19) =6892578a(20) =9482341a(21) =12864643a(22) =17232007a(23) =22812673a(24) =29875352a(25) =38734384a(26) =49755317a(27) =63360923a(28) =80037668a(29) =100342652
External references
- oeis: A319777