Number of walks within N^3 (the first octant of Z^3) starting at (0,0,0) and consisting of n steps taken from {(-1, -1, -1), (-1, 0, 1), (1, 0, 0), (1, 1, -1), (1, 1, 1)}.
A150752
Number of walks within N^3 (the first octant of Z^3) starting at (0,0,0) and consisting of n steps taken from {(-1, -1, -1), (-1, 0, 1), (1, 0, 0), (1, 1, -1), (1, 1, 1)}.
Terms
- a(0) =1a(1) =2a(2) =8a(3) =29a(4) =127a(5) =528a(6) =2411a(7) =10620a(8) =49681a(9) =225880a(10) =1071866a(11) =4971414a(12) =23805922a(13) =111917754a(14) =539344010a(15) =2560334329a(16) =12397503180a(17) =59283008091a(18) =288120270613
External references
- oeis: A150752