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A265951 as a simple table

na(n)
01
12
28
322
468
5170
6484
71166
83048
97274
1018000
1141806
12100684
13229258
14535692
151206230
162758944
176123650
1813798088
1930284894
2067272756
21146426002
22321513284
23693944814
241510245960
253236648578
266985572672
2714885926182
2831904642348
2967618415690

[1,2,8,22,68,170,484,1166,3048,7274,18000,41806,
 100684,229258,535692,1206230,2758944,6123650,
 13798088,30284894,67272756,146426002,321513284,
 693944814,1510245960,3236648578,6985572672,
 14885926182,31904642348,67618415690]