Triangle read by rows: T(n,k) is the number of permutations of the cyclic group Z/nZ whose longest embedded arithmetic progression has length k.

A339942

Triangle read by rows: T(n,k) is the number of permutations of the cyclic group Z/nZ whose longest embedded arithmetic progression has length k.

Terms

    a(0) =1a(1) =0a(2) =2a(3) =0a(4) =0a(5) =6a(6) =0a(7) =8a(8) =8a(9) =8a(10) =0a(11) =0a(12) =40a(13) =60a(14) =20a(15) =0a(16) =0a(17) =468a(18) =192a(19) =48a(20) =12a(21) =0a(22) =0a(23) =462a(24) =3150a(25) =1176a(26) =210a(27) =42a(28) =0a(29) =128

External references