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A027908 as a simple table

na(n)
01
12
210
350
4266
51452
68074
745474
8258570
91481108
108533660
1149402850
12287134346
131674425300
149792273690
1557407789550
16337281021450
171985342102964
1811706001102180
1969124774458092
20408737856117916
212419833655003752
2214341910428953018
2385087759173024870

[1,2,10,50,266,1452,8074,45474,258570,1481108,
 8533660,49402850,287134346,1674425300,9792273690,
 57407789550,337281021450,1985342102964,
 11706001102180,69124774458092,408737856117916,
 2419833655003752,14341910428953018,
 85087759173024870]