%I A154057
%S A154057 10,25,36,74,46,40,70,47,49,20,13,19,17,13,13,13,13,13,13,13,13,13,13,
               13,
%T A154057 13,13,13,13,13,13,13,13,13,13,13,13,13,13,13,13,13,13,13,13,13,13,13,
               13,
%U A154057 13,13,13,13,13,13,13,13,13
%N A154057 Number of planar triangular n X n X n nonnegative integer grids symmetric 
               under 120 degree rotation with every similarly oriented 4 X 4 X 4 
               subtriangle summing to 6.
%C A154057 Value 13 starts at n=17 and continues through at least n=60.
%Y A154057 Sequence in context: A048195 A133634 A014090 this_sequence A074814 A002600 
               A087473
%Y A154057 Adjacent sequences: A154054 A154055 A154056 this_sequence A154058 A154059 
               A154060
%K A154057 nonn
%O A154057 4,1
%A A154057 Ron Hardin (rhhardin(AT)att.net) Jan 04 2009