A049723 - OEIS

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A049723 as a triangular array

											1
										4		4
									9		6		9
								18		13		13		18
							29		22		15		22		29
						46		33		26		26		33		46
					63		50		39		35		39		50		63
				82		67		54		46		46		54		67		82
			107		88		71		60		56		60		71		88		107
		136		115		96		79		75		75		79		96		115		136
	169		140		119		100

A049723 as a square array

1	4	9	18	29	46	63	82	107	136	169
4	6	13	22	33	50	67	88	115	140
9	13	15	26	39	54	71	96	119
18	22	26	35	46	60	79	100
29	33	39	46	56	75
46	50	54	60	75
63	67	71	79
82	88	96
107	115
136

A049723 as an upper right triangle

1	4	9	18	29	46	63	82	107	136	169
	4	6	13	22	33	50	67	88	115	140
		9	13	15	26	39	54	71	96	119
			18	22	26	35	46	60	79	100
				29	33	39	46	56	75
					46	50	54	60	75
						63	67	71	79
							82	88	96
								107	115
									136