login

A161219 as a simple table

na(n)
14
26
38
412
516
628
740
872
9120
10216
11376
12704
131264
142364
154384
168232
1715424
1829204
1955192
20104976
21199760
22381492
23729448
241398504
252684368
265162856
279942136
2819175160
2937025584
3071585136
31138547336
32268439592
33520602352
341010588256
351963413664
363817763800

[4,6,8,12,16,28,40,72,120,216,376,704,1264,2364,
 4384,8232,15424,29204,55192,104976,199760,381492,
 729448,1398504,2684368,5162856,9942136,19175160,
 37025584,71585136,138547336,268439592,520602352,
 1010588256,1963413664,3817763800]