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, -1, 1), (-1, 0, -1), (1, -1, -1), (1, 1, 0)}.
A148527
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, -1, 1), (-1, 0, -1), (1, -1, -1), (1, 1, 0)}.
Terms
- a(0) =1a(1) =1a(2) =3a(3) =5a(4) =19a(5) =39a(6) =155a(7) =369a(8) =1471a(9) =3959a(10) =15459a(11) =46051a(12) =176267a(13) =564455a(14) =2143697a(15) =7174755a(16) =27365581a(17) =93807603a(18) =361787869a(19) =1257350451a(20) =4906289837a(21) =17245735483a(22) =67874546817a(23) =241532985195a(24) =955342193025
External references
- oeis: A148527