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A290608 as a simple table

na(n)
32
48
512
616
730
848
974
10124
11200
12320
13522
14844
151362
162208
173572
185776
199350
2015128
2124474
2239604
2364080
24103680
25167762
26271444
27439202
28710648
291149852
301860496
313010350
324870848
337881194
3412752044
3520633240
3633385280
3754018522
3887403804
39141422322

[2,8,12,16,30,48,74,124,200,320,522,844,1362,2208,
 3572,5776,9350,15128,24474,39604,64080,103680,
 167762,271444,439202,710648,1149852,1860496,
 3010350,4870848,7881194,12752044,20633240,
 33385280,54018522,87403804,141422322]