A109128 - OEIS

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A109128 as a triangular array

												1
											1		1
										1		3		1
									1		5		5		1
								1		7		11		7		1
							1		9		19		19		9		1
						1		11		29		39		29		11		1
					1		13		41		69		69		41		13		1
				1		15		55		111		139		111		55		15		1
			1		17		71		167		251		251		167		71		17		1
		1		19		89		239		419		503		419		239		89		19		1
	1		21		109		329		659		923		923		659		329		109		21		1

A109128 as a square array

1	1	1	1	1	1	1	1	1	1	1	1
1	3	5	7	9	11	13	15	17	19	21
1	5	11	19	29	41	55	71	89	109
1	7	19	39	69	111	167	239	329
1	9	29	69	139	251	419	659
1	11	41	111	251	503	923
1	13	55	167	419	923
1	15	71	239	659
1	17	89	329
1	19	109
1	21
1

A109128 as an upper right triangle

1	1	1	1	1	1	1	1	1	1	1	1
	1	3	5	7	9	11	13	15	17	19	21
		1	5	11	19	29	41	55	71	89	109
			1	7	19	39	69	111	167	239	329
				1	9	29	69	139	251	419	659
					1	11	41	111	251	503	923
						1	13	55	167	419	923
							1	15	71	239	659
								1	17	89	329
									1	19	109
										1	21
											1