A279416 - OEIS

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A279416 as a triangular array

												0
											0		1
										0		2		3
									0		3		5		6
								0		4		6		9		10
							0		5		8		11		14		15
						0		6		9		12		16		20		21
					0		7		11		15		19		23		27		28
				0		8		12		17		20		26		30		35		36
			0		9		14		18		24		29		33		39		44		45
		0		10		15		21		26		30		37		43		48		54		55
	0		11		17		23		29		35

A279416 as a square array

0	0	0	0	0	0	0	0	0	0	0	0
1	2	3	4	5	6	7	8	9	10	11
3	5	6	8	9	11	12	14	15	17
6	9	11	12	15	17	18	21	23
10	14	16	19	20	24	26	29
15	20	23	26	29	30	35
21	27	30	33	37
28	35	39	43
36	44	48
45	54
55

A279416 as an upper right triangle

0	0	0	0	0	0	0	0	0	0	0	0
	1	2	3	4	5	6	7	8	9	10	11
		3	5	6	8	9	11	12	14	15	17
			6	9	11	12	15	17	18	21	23
				10	14	16	19	20	24	26	29
					15	20	23	26	29	30	35
						21	27	30	33	37
							28	35	39	43
								36	44	48
									45	54
										55