Array read by antidiagonals upwards: T(d,n) = number of d-dimensional permutations of n letters (d >= 1, n >= 1).
A249027
Array read by antidiagonals upwards: T(d,n) = number of d-dimensional permutations of n letters (d >= 1, n >= 1).
Terms
- a(0) =1a(1) =1a(2) =2a(3) =1a(4) =2a(5) =6a(6) =1a(7) =2a(8) =12a(9) =24a(10) =1a(11) =2a(12) =24a(13) =576a(14) =120a(15) =1a(16) =2a(17) =48a(18) =55296a(19) =161280a(20) =720a(21) =1a(22) =2a(23) =96a(24) =36972288a(25) =2781803520a(26) =812851200a(27) =5040a(28) =1a(29) =2
External references
- oeis: A249027