A276775 - OEIS

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A276775 as a triangular array

											1
										1		2
									2		3		4
								4		6		5		6
							9		15		11		7		8
						21		36		32		17		9		10
					51		91		83		56		24		11		12
				127		232		226		157		88		32		13		14
			323		603		608		459		266		129		41		15		16
		835		1585		1655		1305		832		419		180		51		17		18
	2188		4213		4517		3726		2499		1397		626		242		62		19		20

A276775 as a square array

1	1	2	4	9	21	51	127	323	835	2188
2	3	6	15	36	91	232	603	1585	4213
4	5	11	32	83	226	608	1655	4517
6	7	17	56	157	459	1305	3726
8	9	24	88	266	832	2499
10	11	32	129	419	1397
12	13	41	180	626
14	15	51	242
16	17	62
18	19
20

A276775 as an upper right triangle

1	1	2	4	9	21	51	127	323	835	2188
	2	3	6	15	36	91	232	603	1585	4213
		4	5	11	32	83	226	608	1655	4517
			6	7	17	56	157	459	1305	3726
				8	9	24	88	266	832	2499
					10	11	32	129	419	1397
						12	13	41	180	626
							14	15	51	242
								16	17	62
									18	19
										20