A140757 - OEIS

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

A140757 as a triangular array

												1
											0		2
										3		1		4
									3		5		2		6
								7		5		8		4		9
							8		10		7		11		6		12
						13		11		14		10		15		9		16
					15		17		14		18		13		19		12		20
				21		19		22		18		23		17		24		16		25
			24		26		23		27		22		28		21		29		20		30
		31		29		32		28		33		27		34		26		35		25		36
	35		37		34		38		33		39		32		40		31		41

A140757 as a square array

1	0	3	3	7	8	13	15	21	24	31	35
2	1	5	5	10	11	17	19	26	29	37
4	2	8	7	14	14	22	23	32	34
6	4	11	10	18	18	27	28	38
9	6	15	13	23	22	33	33
12	9	19	17	28	27	39
16	12	24	21	34	32
20	16	29	26	40
25	20	35	31
30	25	41
36

A140757 as an upper right triangle

1	0	3	3	7	8	13	15	21	24	31	35
	2	1	5	5	10	11	17	19	26	29	37
		4	2	8	7	14	14	22	23	32	34
			6	4	11	10	18	18	27	28	38
				9	6	15	13	23	22	33	33
					12	9	19	17	28	27	39
						16	12	24	21	34	32
							20	16	29	26	40
								25	20	35	31
									30	25	41
										36