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), (0, 0, 1), (0, 1, 0), (1, 0, 0), (1, 1, -1)}.
A151062
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), (0, 0, 1), (0, 1, 0), (1, 0, 0), (1, 1, -1)}.
Terms
- a(0) =1a(1) =3a(2) =10a(3) =38a(4) =155a(5) =655a(6) =2849a(7) =12669a(8) =57209a(9) =261589a(10) =1208492a(11) =5628460a(12) =26393977a(13) =124495365a(14) =590093208a(15) =2808834386a(16) =13419588807a(17) =64319800651a(18) =309159921846
External references
- oeis: A151062