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A266134 as a simple table

na(n)
11
261
3385
4572
53851
644623
7347576
81650710
912360130
10106235031
11807578953
125406175833
1341246496374
14328408364493
152509089355110
1618435763834038
17141054581587168
181100340622468942
198442342552511565
2063751061176641632

[1,61,385,572,3851,44623,347576,1650710,12360130,
 106235031,807578953,5406175833,41246496374,
 328408364493,2509089355110,18435763834038,
 141054581587168,1100340622468942,8442342552511565,
 63751061176641632]