Number of set partitions of [n] such that i-j is a multiple of seven for all i,j belonging to the same block.
A275074
Number of set partitions of [n] such that i-j is a multiple of seven 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) =1a(8) =2a(9) =4a(10) =8a(11) =16a(12) =32a(13) =64a(14) =128a(15) =320a(16) =800a(17) =2000a(18) =5000a(19) =12500a(20) =31250a(21) =78125a(22) =234375a(23) =703125a(24) =2109375a(25) =6328125a(26) =18984375a(27) =56953125a(28) =170859375a(29) =592312500
External references
- oeis: A275074