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A019186 as a simple table

na(n)
30
40
52
68
76
816
958
10120
11250
12672
131616
143754
159534
1623898
1759600
18151961
19393164
201015022
212648698
226968726
2318376842
2448656345
25129493884
26345291813
27922507740
282471468426
296633836472
3017830265435
3148005356190

[0,0,2,8,6,16,58,120,250,672,1616,3754,9534,23898,
 59600,151961,393164,1015022,2648698,6968726,
 18376842,48656345,129493884,345291813,922507740,
 2471468426,6633836472,17830265435,48005356190]