Triangle read by rows: T(n,k) is the number of labeled magmas with n elements and k idempotents.
A391480
Triangle read by rows: T(n,k) is the number of labeled magmas with n elements and k idempotents.
Terms
- a(0) =1a(1) =0a(2) =1a(3) =4a(4) =8a(5) =4a(6) =5832a(7) =8748a(8) =4374a(9) =729a(10) =1358954496a(11) =1811939328a(12) =905969664a(13) =201326592a(14) =16777216
External references
- oeis: A391480