Array read by upwards antidiagonals: T(n,k) is the number of ways to place n persons on different seats such that each person number p, 1 <= p <= n, differs from the seat number s(p), 1 <= s(p) <= n+k, k >= 0.

A336246

Array read by upwards antidiagonals: T(n,k) is the number of ways to place n persons on different seats such that each person number p, 1 <= p <= n, differs from the seat number s(p), 1 <= s(p) <= n+k, k >= 0.

Terms

    a(0) =0a(1) =1a(2) =1a(3) =2a(4) =3a(5) =2a(6) =9a(7) =11a(8) =7a(9) =3a(10) =44a(11) =53a(12) =32a(13) =13a(14) =4a(15) =265a(16) =309a(17) =181a(18) =71a(19) =21a(20) =5a(21) =1854a(22) =2119a(23) =1214a(24) =465a(25) =134a(26) =31a(27) =6a(28) =14833a(29) =16687

External references