A136248 Triangle H4 read by rows: see link for definition.

1, 1, 1, 1, 1, 1, 3, 4, 6, 4, 3, 1, 1, 7, 13, 26, 31, 31, 25, 13, 6, 1, 1, 15, 40, 100, 171, 220, 255, 215, 156, 85, 35, 10, 1

Offset: 1

Author

Gottfried Helms, Apr 16 2008

Keywords

• nonn
• tabf

Comments

Row n has 3n+1 terms.

Examples

			Triangle begins:
1
1 1 1 1
1 3 4 6 4 3 1
1 7 13 26 31 31 25 13 6 1
1 15 40 100 171 220 255 215 156 85 35 10 1
		

Links

• Gottfried Helms, Comments on A136206 and A136248