A168261 - OEIS

The OEIS is supported by the many generous donors to the OEIS Foundation.

A168261 as a triangular array

													1
												1		1
											0		0		2
										1		1		0		2
									0		0		0		0		4
								0		0		2		0		0		4
							0		0		0		0		0		0		6
						1		1		0		2		0		0		0		6
					0		0		0		0		0		0		0		0		10
				0		0		0		0		4		0		0		0		0		10
			0		0		0		0		0		0		0		0		0		0		14
		0		0		2		0		0		4		0		0		0		0		0		14
	0		0		0		0		0		0		0		0		0		0		0		0		20

A168261 as a square array

1	1	0	1	0	0	0	1	0	0	0	0	0
1	0	1	0	0	0	1	0	0	0	0	0
2	0	0	2	0	0	0	0	0	2	0
2	0	0	0	2	0	0	0	0	0
4	0	0	0	0	4	0	0	0
4	0	0	0	0	0	4	0
6	0	0	0	0	0	0
6	0	0	0	0	0
10	0	0	0	0
10	0	0	0
14	0	0
14	0
20

A168261 as an upper right triangle

1	1	0	1	0	0	0	1	0	0	0	0	0
	1	0	1	0	0	0	1	0	0	0	0	0
		2	0	0	2	0	0	0	0	0	2	0
			2	0	0	0	2	0	0	0	0	0
				4	0	0	0	0	4	0	0	0
					4	0	0	0	0	0	4	0
						6	0	0	0	0	0	0
							6	0	0	0	0	0
								10	0	0	0	0
									10	0	0	0
										14	0	0
											14	0
												20