A219704 - OEIS

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

A219704 as a triangular array

												2
											2		2
										3		3		3
									4		5		5		4
								5		7		13		7		5
							6		9		25		25		9		6
						7		11		45		64		45		11		7
					8		13		78		158		158		78		13		8
				9		15		130		374		518		374		130		15		9
			10		17		208		841		1648		1648		841		208		17		10
		11		19		320		1789		5007		6976		5007		1789		320		19		11
	12		21		475

A219704 as a square array

2	2	3	4	5	6	7	8	9	10	11	12
2	3	5	7	9	11	13	15	17	19	21
3	5	13	25	45	78	130	208	320	475
4	7	25	64	158	374	841	1789
5	9	45	158	518	1648	5007
6	11	78	374	1648	6976
7	13	130	841	5007
8	15	208	1789
9	17	320
10	19
11

A219704 as an upper right triangle

2	2	3	4	5	6	7	8	9	10	11	12
	2	3	5	7	9	11	13	15	17	19	21
		3	5	13	25	45	78	130	208	320	475
			4	7	25	64	158	374	841	1789
				5	9	45	158	518	1648	5007
					6	11	78	374	1648	6976
						7	13	130	841	5007
							8	15	208	1789
								9	17	320
									10	19
										11