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), (0, 1, 0), (1, -1, 0)}.
A148127
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), (0, 1, 0), (1, -1, 0)}.
Terms
- a(0) =1a(1) =1a(2) =2a(3) =4a(4) =11a(5) =26a(6) =75a(7) =221a(8) =666a(9) =2059a(10) =6659a(11) =21851a(12) =72248a(13) =246377a(14) =845284a(15) =2944154a(16) =10364180a(17) =36881317a(18) =132306401a(19) =478964897a(20) =1747856485a(21) =6414446498a(22) =23719301449a(23) =88172846733a(24) =329710429245
External references
- oeis: A148127