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A061551 as a simple table

na(n)
01
11
22
33
46
510
620
735
869
9124
10241
11440
12846
131560
142977
155525
1610490
1719551
1836994
1969142
20130532
21244419
22460737
23863788
241626629
253052100
265743674
2710782928
2820283121
2938092457
3071632290
31134560491
32252989326
33475313762

[1,1,2,3,6,10,20,35,69,124,241,440,846,1560,2977,
 5525,10490,19551,36994,69142,130532,244419,460737,
 863788,1626629,3052100,5743674,10782928,20283121,
 38092457,71632290,134560491,252989326,475313762]