Irregular table T(n, k), n >= 0, k = 1..max(1, n), read by rows; T(n, k) is the number of permutations s of { 1..n } such that p(s) = k where p(s) is the least m > 0 such that, working in Z/nZ, s(i) + m = s(i + m) for i = 1..n.

A343488

Irregular table T(n, k), n >= 0, k = 1..max(1, n), read by rows; T(n, k) is the number of permutations s of { 1..n } such that p(s) = k where p(s) is the least m > 0 such that, working in Z/nZ, s(i) + m = s(i + m) for i = 1..n.

Terms

    a(0) =1a(1) =1a(2) =2a(3) =0a(4) =3a(5) =0a(6) =3a(7) =4a(8) =4a(9) =0a(10) =16a(11) =5a(12) =0a(13) =0a(14) =0a(15) =115a(16) =6a(17) =12a(18) =42a(19) =0a(20) =0a(21) =660a(22) =7a(23) =0a(24) =0a(25) =0a(26) =0a(27) =0a(28) =5033a(29) =8

External references