Number of set partitions of [3*n] such that within each block the numbers of elements from all residue classes modulo n are equal for n>0, a(0)=1.

A275100

Number of set partitions of [3*n] such that within each block the numbers of elements from all residue classes modulo n are equal for n>0, a(0)=1.

Terms

    a(0) =1a(1) =5a(2) =16a(3) =64a(4) =298a(5) =1540a(6) =8506a(7) =48844a(8) =286498a(9) =1699300a(10) =10136746a(11) =60643324a(12) =363328498a(13) =2178376660a(14) =13065476986a(15) =78378513004a(16) =470228031298

External references