Triangle read by rows: T(n,k) is the number of unoriented colorings of the facets of a regular n-dimensional orthotope using exactly k colors. Row n has 2n columns.
A325009
Triangle read by rows: T(n,k) is the number of unoriented colorings of the facets of a regular n-dimensional orthotope using exactly k colors. Row n has 2n columns.
Terms
- a(0) =1a(1) =1a(2) =1a(3) =4a(4) =6a(5) =3a(6) =1a(7) =8a(8) =29a(9) =52a(10) =45a(11) =15a(12) =1a(13) =13a(14) =84a(15) =297a(16) =600a(17) =690a(18) =420a(19) =105a(20) =1a(21) =19a(22) =192a(23) =1116a(24) =3933a(25) =8661a(26) =11970a(27) =10080a(28) =4725a(29) =945
External references
- oeis: A325009