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A263575 as a simple table

na(n)
02
11
24
314
453
5227
61092
75791
833350
9206511
101365563
119590847
1271216713
13556861216
144569168866
1539222394456
16351304769679
173275433717440
1831723522878974
19318571978752719
203311400814816987
2135573458376435132
22394404160256111139
234507130777468928696

[2,1,4,14,53,227,1092,5791,33350,206511,1365563,
 9590847,71216713,556861216,4569168866,39222394456,
 351304769679,3275433717440,31723522878974,
 318571978752719,3311400814816987,
 35573458376435132,394404160256111139,
 4507130777468928696]