Starting a random walk on Z at 0 triangle T(j,k) gives the number of paths of length 2*j returning to 0 exactly k times.
A276418
Starting a random walk on Z at 0 triangle T(j,k) gives the number of paths of length 2*j returning to 0 exactly k times.
Terms
- a(0) =1a(1) =2a(2) =2a(3) =6a(4) =6a(5) =4a(6) =20a(7) =20a(8) =16a(9) =8a(10) =70a(11) =70a(12) =60a(13) =40a(14) =16a(15) =252a(16) =252a(17) =224a(18) =168a(19) =96a(20) =32a(21) =924a(22) =924a(23) =840a(24) =672a(25) =448a(26) =224a(27) =64a(28) =3432a(29) =3432
External references
- oeis: A276418