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A278723 as a simple table

na(n)
135
21050
333466
41058494
530942600
6815294800
719328645044
8414671691083
98109321869307
10145580441811727
112414555760264316
1237210586178295489
13535549333443944707
147231147745218833289
1591971617342903492615

[35,1050,33466,1058494,30942600,815294800,
 19328645044,414671691083,8109321869307,
 145580441811727,2414555760264316,
 37210586178295489,535549333443944707,
 7231147745218833289,91971617342903492615]