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A026722 as a simple table

na(n)
01
11
24
36
421
534
6113
7188
8607
91023
103246
115509
1217290
1329465
1491820
15156878
16486549
17832671
182574116
194410189
2013602994
2123323442
2271826377
23123216902
24379031585
25650462028
261999308247
273431941721
2810542607578
2918100449404

[1,1,4,6,21,34,113,188,607,1023,3246,5509,17290,
 29465,91820,156878,486549,832671,2574116,4410189,
 13602994,23323442,71826377,123216902,379031585,
 650462028,1999308247,3431941721,10542607578,
 18100449404]