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A197709 as a simple table

na(n)
1256
21525
315241
4106441
5534597
62091239
76776036
818992710
947486563
10108285670
11228948163
12454458310
13855154435
141537112038
152655445795
164431034438
177171212835
1811295015910
1917363599363
2026116502470
2138514458563
2255789499110
2379503137635
24111613460038
25154551988195
26211311224038

[256,1525,15241,106441,534597,2091239,6776036,
 18992710,47486563,108285670,228948163,454458310,
 855154435,1537112038,2655445795,4431034438,
 7171212835,11295015910,17363599363,26116502470,
 38514458563,55789499110,79503137635,111613460038,
 154551988195,211311224038]