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A251600 as a simple table

na(n)
11
20
32
45
516
620
718
843
9162
10190
11532
12916
13564
143314
153908
1610499
1730789
1853828
19153384
2062946
21278737
22364195
23629686
243768344
257827416
269496221
2723159959
28184328920
2968035462
3092566977
31457932094
32370110663
33648634305
344032924162
357841376455

[1,0,2,5,16,20,18,43,162,190,532,916,564,3314,
 3908,10499,30789,53828,153384,62946,278737,364195,
 629686,3768344,7827416,9496221,23159959,184328920,
 68035462,92566977,457932094,370110663,648634305,
 4032924162,7841376455]