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, 0, 1), (0, 0, 1), (0, 1, -1), (1, -1, 0)}.
A148098
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, 0, 1), (0, 0, 1), (0, 1, -1), (1, -1, 0)}.
Terms
- a(0) =1a(1) =1a(2) =2a(3) =4a(4) =10a(5) =26a(6) =72a(7) =226a(8) =684a(9) =2201a(10) =7370a(11) =24777a(12) =85667a(13) =300962a(14) =1080541a(15) =3892497a(16) =14248086a(17) =53141562a(18) =197833744a(19) =746885311a(20) =2853338098a(21) =10921983580a(22) =42150766750a(23) =164034497858a(24) =641789674983
External references
- oeis: A148098