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, -1, -1), (1, 0, 0), (1, 1, 1)}.
A150356
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, -1, -1), (1, 0, 0), (1, 1, 1)}.
Terms
- a(0) =1a(1) =2a(2) =7a(3) =23a(4) =91a(5) =350a(6) =1437a(7) =5838a(8) =24751a(9) =104208a(10) =449389a(11) =1929971a(12) =8443469a(13) =36844202a(14) =162713469a(15) =717537441a(16) =3195215965a(17) =14217484796a(18) =63698045653a(19) =285299151193
External references
- oeis: A150356