Number of set partitions of [n] such that i-j is a multiple of six for all i,j belonging to the same block.

A275073

Number of set partitions of [n] such that i-j is a multiple of six for all i,j belonging to the same block.

Terms

    a(0) =1a(1) =1a(2) =1a(3) =1a(4) =1a(5) =1a(6) =1a(7) =2a(8) =4a(9) =8a(10) =16a(11) =32a(12) =64a(13) =160a(14) =400a(15) =1000a(16) =2500a(17) =6250a(18) =15625a(19) =46875a(20) =140625a(21) =421875a(22) =1265625a(23) =3796875a(24) =11390625a(25) =39487500a(26) =136890000a(27) =474552000a(28) =1645113600a(29) =5703060480

External references