Binary Geometric Number Pyramid August 25, 2013 7 14 15 28 29 30 31 geometric sequence number pyramid +
Alternate Number-Star Pyramid August 23, 2013 1 2*2 3*3*3 3*3*3 2*2 1*1 Alternate Number-Star pyramid +
Vertical Continues Number Pyramid August 22, 2013 1 23 4 56 7 89 10 vertical continues number pyramid +