A131413 - OEIS

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A131413 as a triangular array

												1
											4		3
										7		6		5
									10		9		8		7
								13		12		11		10		9
							16		15		14		13		12		11
						19		18		17		16		15		14		13
					22		21		20		19		18		17		16		15
				25		24		23		22		21		20		19		18		17
			28		27		26		25		24		23		22		21		20		19
		31		30		29		28		27		26		25		24		23		22		21
	34		33		32		31		30		29		28		27		26		25		24		23

A131413 as a square array

1	4	7	10	13	16	19	22	25	28	31	34
3	6	9	12	15	18	21	24	27	30	33
5	8	11	14	17	20	23	26	29	32
7	10	13	16	19	22	25	28	31
9	12	15	18	21	24	27	30
11	14	17	20	23	26	29
13	16	19	22	25	28
15	18	21	24	27
17	20	23	26
19	22	25
21	24
23

A131413 as an upper right triangle

1	4	7	10	13	16	19	22	25	28	31	34
	3	6	9	12	15	18	21	24	27	30	33
		5	8	11	14	17	20	23	26	29	32
			7	10	13	16	19	22	25	28	31
				9	12	15	18	21	24	27	30
					11	14	17	20	23	26	29
						13	16	19	22	25	28
							15	18	21	24	27
								17	20	23	26
									19	22	25
										21	24
											23