Python program; enter command zeroes(n) for a sequence up to pile size n.

def data(x,y):                               #returns x-by-y table
       Col = []
       for r in range(y):
               Col.append(r)
       for i in Col:
               Row=[]
               for j in range(x):
                       Row.append("empty")
               Col[i] = Row

       for i in range(y):
               Col[i][0] = 0
       Col[0][1]=1
       Col[0][2]=0
       Col[1][1]=1
       Col[1][2]=2
       Col[2][1]=1
       Col[2][2]=2
       Col[3][2]=1
       for i in range(3,y):
               Col[i][1]=0
       for i in range(4,y):
               Col[i][2]=0                  #first three columns

       for p in range(3,x):
               for v in range(y):              #looking at Col[v][p]

                       if v-1>0 and p-v+1>-1:
                               a=Col[v-1][p-v+1]
                       else:
                                       a=-1
                       if v>0 and p-v>-1:
                               b=Col[v][p-v]
                       else:
                               b=-1
                       if v+1>0 and p-v-1>-1:
                               c=Col[v+1][p-v-1]
                       else:
                               c=-1
                       choice=[a,b,c]          #depends on a, b and c


                       if 0 in choice:
                               if 1 in choice:
                                       if 2 in choice:
                                               Col[v][p]=3
                                       else:
                                               Col[v][p]=2
                             else:
                                       Col[v][p]=1
                       else:
                               Col[v][p]=0     #assign value to Col[v][p]
       return Col


def zeroes(l):                      #prints losing pile sizes for velocity 1
       Table = data(l,l)
       for i in range(l):
               if Table[1][i]==0:
                       print i,",",