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, 0, 0), (1, -1, 1), (1, 0, 1), (1, 1, -1), (1, 1, 0)}.
A150859
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, 0, 0), (1, -1, 1), (1, 0, 1), (1, 1, -1), (1, 1, 0)}.
Terms
- a(0) =1a(1) =2a(2) =8a(3) =32a(4) =142a(5) =634a(6) =2942a(7) =13738a(8) =65314a(9) =312020a(10) =1504974a(11) =7285354a(12) =35468060a(13) =173142920a(14) =848281038a(15) =4164533860a(16) =20495009166a(17) =101020632516a(18) =498786103290
External references
- oeis: A150859