16 neurons, using layout type=2 (Smart)
#0   T	0,0	50x50
#1   T	140,0	50x50
#2   T	0,-140	50x50
#3   *	280,0	50x50
#4   T	140,-140	50x50
#5   N	350,0	50x50
#6   *	280,-140	50x50
#7   T	280,-280	50x50
#8   N	350,-140	50x50
#9   N	350,-280	50x50
#10  N	420,-140	50x50
#11  N	420,-280	50x50
#12  T	0,-280	50x50
#13  N	490,-280	50x50
#14  *	140,-280	50x50
#15  N	560,-280	50x50
===========================================
   12:T          14:*          7:T    9:N    11:N   13:N   15:N   
                                                                  
                                                                  
                                                                  
   2:T           4:T           6:*    8:N    10:N                 
                                                                  
                                                                  
                                                                  
   0:T           1:T           3:*    5:N                         
===========================================