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A251654 as a simple table

na(n)
00
11
21
30
42
54
67
713
826
950
1096
11185
12357
13688
141326
152556
164927
179497
1818306
1935286
2068016
21131105
22252713
23487120
24938954
251809892
263488679
276724645
2812962170
2924985386
3048160880
3192833081
32178941517
33344920864
34664856342
351281551804

[0,1,1,0,2,4,7,13,26,50,96,185,357,688,1326,2556,
 4927,9497,18306,35286,68016,131105,252713,487120,
 938954,1809892,3488679,6724645,12962170,24985386,
 48160880,92833081,178941517,344920864,664856342,
 1281551804]