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, 0), (-1, 1, -1), (1, -1, -1), (1, 0, 1)}.
A148541
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, 0), (-1, 1, -1), (1, -1, -1), (1, 0, 1)}.
Terms
- a(0) =1a(1) =1a(2) =3a(3) =5a(4) =19a(5) =45a(6) =167a(7) =463a(8) =1773a(9) =5347a(10) =21243a(11) =66329a(12) =270741a(13) =881867a(14) =3635689a(15) =12286063a(16) =51092407a(17) =176869405a(18) =744179477a(19) =2618815961a(20) =11119042747a(21) =39809321921a(22) =169909694141a(23) =617996794235
External references
- oeis: A148541