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, 0), (-1, 0, -1), (-1, 0, 0), (1, 0, 1), (1, 1, 0)}.
A150682
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, 0), (-1, 0, -1), (-1, 0, 0), (1, 0, 1), (1, 1, 0)}.
Terms
- a(0) =1a(1) =2a(2) =8a(3) =26a(4) =114a(5) =424a(6) =1938a(7) =7682a(8) =35932a(9) =147832a(10) =701588a(11) =2958022a(12) =14178258a(13) =60824682a(14) =293639940a(15) =1276150788a(16) =6194167962a(17) =27191889326a(18) =132539041596a(19) =586533927438
External references
- oeis: A150682