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A022087 as a simple table

na(n)
00
14
24
38
412
520
632
752
884
9136
10220
11356
12576
13932
141508
152440
163948
176388
1810336
1916724
2027060
2143784
2270844
23114628
24185472
25300100
26485572
27785672
281271244
292056916
303328160
315385076
328713236
3314098312
3422811548
3536909860
3659721408
3796631268

[0,4,4,8,12,20,32,52,84,136,220,356,576,932,1508,
 2440,3948,6388,10336,16724,27060,43784,70844,
 114628,185472,300100,485572,785672,1271244,
 2056916,3328160,5385076,8713236,14098312,22811548,
 36909860,59721408,96631268]