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A279896 as a simple table

na(n)
10
24
36
48
518
636
778
8160
9338
10700
111462
123032
136298
1413044
1527006
1655824
17115298
18237868
19490310
201009736
212077738
224271972
238776974
2418019968
2536972018
2675808156
27155344598
28318145720
29651204538
301332235220
312724122782
325567550192

[0,4,6,8,18,36,78,160,338,700,1462,3032,6298,
 13044,27006,55824,115298,237868,490310,1009736,
 2077738,4271972,8776974,18019968,36972018,
 75808156,155344598,318145720,651204538,1332235220,
 2724122782,5567550192]