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), (-1, 1, 0), (1, -1, 1), (1, 1, 0)}.
A149308
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), (-1, 1, 0), (1, -1, 1), (1, 1, 0)}.
Terms
- a(0) =1a(1) =1a(2) =4a(3) =11a(4) =48a(5) =160a(6) =722a(7) =2639a(8) =12302a(9) =47370a(10) =223638a(11) =891897a(12) =4264396a(13) =17419445a(14) =83826126a(15) =348887426a(16) =1688966347a(17) =7129241116a(18) =34645839644a(19) =147958621019a(20) =721420188206
External references
- oeis: A149308