A208555 - OEIS

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A208555 as a triangular array

										2
									4		4
								6		16		6
							10		36		36		9
						16		100		90		81		12
					26		256		330		225		144		16
				42		676		1008		1089		420		256		20
			68		1764		3354		3969		2508		784		400		25
		110		4624		10710		16641		10080		5776		1260		625		30
	178		12100		34884		65025		50052		25600		11020

A208555 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	90	330	1008	3354	10710	34884
9	81	225	1089	3969	16641	65025
12	144	420	2508	10080	50052
16	256	784	5776	25600
20	400	1260	11020
25	625
30

A208555 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	90	330	1008	3354	10710	34884
			9	81	225	1089	3969	16641	65025
				12	144	420	2508	10080	50052
					16	256	784	5776	25600
						20	400	1260	11020
							25	625
								30