A208840 - OEIS

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A208840 as a triangular array

										2
									4		4
								6		16		6
							10		36		36		9
						16		100		78		81		14
					26		256		282		171		196		22
				42		676		768		855		406		484		35
			68		1764		2430		2421		3010		990		1225		56
		110		4624		7086		9801		8736		11242		2485		3136		90
	178		12100		21588		31419		49126		33088		44275

A208840 as a square array

2	4	6	10	16	26	42	68	110	178
4	16	36	100	256	676	1764	4624	12100
6	36	78	282	768	2430	7086	21588
9	81	171	855	2421	9801	31419
14	196	406	3010	8736	49126
22	484	990	11242	33088
35	1225	2485	44275
56	3136
90

A208840 as an upper right triangle

2	4	6	10	16	26	42	68	110	178
	4	16	36	100	256	676	1764	4624	12100
		6	36	78	282	768	2430	7086	21588
			9	81	171	855	2421	9801	31419
				14	196	406	3010	8736	49126
					22	484	990	11242	33088
						35	1225	2485	44275
							56	3136
								90