A213571 - OEIS

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A213571 as a triangular array

										1
									5		3
								16		13		7
							42		38		29		15
						99		94		82		61		31
					219		213		198		170		125		63
				466		459		441		406		346		253		127
			968		960		939		897		822		698		509		255
		1981		1972		1948		1899		1809		1654		1402		1021		511
	4017		4007		3980		3924		3819		3633

A213571 as a square array

1	5	16	42	99	219	466	968	1981	4017
3	13	38	94	213	459	960	1972	4007
7	29	82	198	441	939	1948	3980
15	61	170	406	897	1899	3924
31	125	346	822	1809	3819
63	253	698	1654	3633
127	509	1402
255	1021
511

A213571 as an upper right triangle

1	5	16	42	99	219	466	968	1981	4017
	3	13	38	94	213	459	960	1972	4007
		7	29	82	198	441	939	1948	3980
			15	61	170	406	897	1899	3924
				31	125	346	822	1809	3819
					63	253	698	1654	3633
						127	509	1402
							255	1021
								511