Array T(n,k) of number of Schur rings over Z_{p^n} where n>=1 for p odd and k-th prime (by descending antidiagonals).

A320948

Array T(n,k) of number of Schur rings over Z_{p^n} where n>=1 for p odd and k-th prime (by descending antidiagonals).

Terms

    a(0) =2a(1) =3a(2) =7a(3) =4a(4) =13a(5) =25a(6) =4a(7) =21a(8) =58a(9) =92a(10) =6a(11) =21a(12) =113a(13) =263a(14) =345a(15) =5a(16) =43a(17) =113a(18) =614a(19) =1203a(20) =1311a(21) =6a(22) =31a(23) =313a(24) =614a(25) =3351a(26) =5531a(27) =5030a(28) =4a(29) =43

External references