A204890 - OEIS

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A204890 as a triangular array

											1
										3		2
									5		4		2
								9		8		6		4
							11		10		8		6		2
						15		14		12		10		6		4
					17		16		14		12		8		6		2
				21		20		18		16		12		10		6		4
			27		26		24		22		18		16		12		10		6
		29		28		26		24		20		18		14		12		8		2
	35		34		32		30		26		24		20		18		14		8		6
39		38		36		34		30		28		24		22

A204890 as a square array

1	3	5	9	11	15	17	21	27	29	35	39
2	4	8	10	14	16	20	26	28	34	38
2	6	8	12	14	18	24	26	32	36
4	6	10	12	16	22	24	30	34
2	6	8	12	18	20	26	30
4	6	10	16	18	24	28
2	6	12	14	20	24
4	10	12	18	22
6	8	14
2	8
6

A204890 as an upper right triangle

1	3	5	9	11	15	17	21	27	29	35	39
	2	4	8	10	14	16	20	26	28	34	38
		2	6	8	12	14	18	24	26	32	36
			4	6	10	12	16	22	24	30	34
				2	6	8	12	18	20	26	30
					4	6	10	16	18	24	28
						2	6	12	14	20	24
							4	10	12	18	22
								6	8	14
									2	8
										6

											1
										3		2
									5		4		2
								9		8		6		4
							11		10		8		6		2
						15		14		12		10		6		4
					17		16		14		12		8		6		2
				21		20		18		16		12		10		6		4
			27		26		24		22		18		16		12		10		6
		29		28		26		24		20		18		14		12		8		2
	35		34		32		30		26		24		20		18		14		8		6
39		38		36		34		30		28		24		22

1	3	5	9	11	15	17	21	27	29	35	39
2	4	8	10	14	16	20	26	28	34	38
2	6	8	12	14	18	24	26	32	36
4	6	10	12	16	22	24	30	34
2	6	8	12	18	20	26	30
4	6	10	16	18	24	28
2	6	12	14	20	24
4	10	12	18	22
6	8	14
2	8
6

1	3	5	9	11	15	17	21	27	29	35	39
	2	4	8	10	14	16	20	26	28	34	38
		2	6	8	12	14	18	24	26	32	36
			4	6	10	12	16	22	24	30	34
				2	6	8	12	18	20	26	30
					4	6	10	16	18	24	28
						2	6	12	14	20	24
							4	10	12	18	22
								6	8	14
									2	8
										6

											1
										3		2
									5		4		2
								9		8		6		4
							11		10		8		6		2
						15		14		12		10		6		4
					17		16		14		12		8		6		2
				21		20		18		16		12		10		6		4
			27		26		24		22		18		16		12		10		6
		29		28		26		24		20		18		14		12		8		2
	35		34		32		30		26		24		20		18		14		8		6
39		38		36		34		30		28		24		22

1	3	5	9	11	15	17	21	27	29	35	39
2	4	8	10	14	16	20	26	28	34	38
2	6	8	12	14	18	24	26	32	36
4	6	10	12	16	22	24	30	34
2	6	8	12	18	20	26	30
4	6	10	16	18	24	28
2	6	12	14	20	24
4	10	12	18	22
6	8	14
2	8
6

1	3	5	9	11	15	17	21	27	29	35	39
	2	4	8	10	14	16	20	26	28	34	38
		2	6	8	12	14	18	24	26	32	36
			4	6	10	12	16	22	24	30	34
				2	6	8	12	18	20	26	30
					4	6	10	16	18	24	28
						2	6	12	14	20	24
							4	10	12	18	22
								6	8	14
									2	8
										6

											1
										3		2
									5		4		2
								9		8		6		4
							11		10		8		6		2
						15		14		12		10		6		4
					17		16		14		12		8		6		2
				21		20		18		16		12		10		6		4
			27		26		24		22		18		16		12		10		6
		29		28		26		24		20		18		14		12		8		2
	35		34		32		30		26		24		20		18		14		8		6
39		38		36		34		30		28		24		22

1	3	5	9	11	15	17	21	27	29	35	39
2	4	8	10	14	16	20	26	28	34	38
2	6	8	12	14	18	24	26	32	36
4	6	10	12	16	22	24	30	34
2	6	8	12	18	20	26	30
4	6	10	16	18	24	28
2	6	12	14	20	24
4	10	12	18	22
6	8	14
2	8
6

1	3	5	9	11	15	17	21	27	29	35	39
	2	4	8	10	14	16	20	26	28	34	38
		2	6	8	12	14	18	24	26	32	36
			4	6	10	12	16	22	24	30	34
				2	6	8	12	18	20	26	30
					4	6	10	16	18	24	28
						2	6	12	14	20	24
							4	10	12	18	22
								6	8	14
									2	8
										6