Number of set partitions of [n] such that the difference between each element and its index (in the partition) is a multiple of seven.

A274864

Number of set partitions of [n] such that the difference between each element and its index (in the partition) is a multiple of seven.

Terms

    a(0) =1a(1) =1a(2) =2a(3) =4a(4) =8a(5) =16a(6) =32a(7) =64a(8) =128a(9) =256a(10) =512a(11) =1024a(12) =2048a(13) =4096a(14) =8192a(15) =16448a(16) =33024a(17) =66304a(18) =133120a(19) =267264a(20) =536576a(21) =1077248a(22) =2175168a(23) =4395968a(24) =8888800a(25) =17978016a(26) =36364960a(27) =73558304a(28) =148788576a(29) =303793408

External references