Triangle T(n,k) read by rows: connected topologies of Goldstone diagrams with n interactions and k external potentials.
A328923
Triangle T(n,k) read by rows: connected topologies of Goldstone diagrams with n interactions and k external potentials.
Terms
- a(0) =1a(1) =2a(2) =1a(3) =6a(4) =4a(5) =1a(6) =76a(7) =60a(8) =18a(9) =2a(10) =2124a(11) =1776a(12) =600a(13) =96a(14) =6a(15) =97968a(16) =84720a(17) =31080a(18) =6000a(19) =600a(20) =24a(21) =6624720a(22) =5876640a(23) =2287440a(24) =497280a(25) =63000a(26) =4320a(27) =120a(28) =615022560a(29) =556466400
External references
- oeis: A328923