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, 1, -1), (0, 0, 1), (0, 1, 0), (1, 0, 0)}.
A151037
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, 1, -1), (0, 0, 1), (0, 1, 0), (1, 0, 0)}.
Terms
- a(0) =1a(1) =3a(2) =9a(3) =31a(4) =117a(5) =461a(6) =1875a(7) =7807a(8) =33115a(9) =142517a(10) =620337a(11) =2725701a(12) =12071605a(13) =53820411a(14) =241320911a(15) =1087364591a(16) =4920600571a(17) =22351035079a(18) =101865024915a(19) =465632154641
External references
- oeis: A151037