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A303911 as a triangular array

1
11
122
1354
1410139
1516313520
162460989548
1733103217304262115
1844162423764945727286
19562417431658264329162033719
110703411221322463198996898457141842
111854661893

A303911 as a square array

111111111111
1234567891011
251016243344567085
4133160103162241341466
9359821742374312211893
209530476416583224
4826294526436319
11572729168996
28620338984
7195714
1842

A303911 as an upper right triangle

111111111111
1234567891011
251016243344567085
4133160103162241341466
9359821742374312211893
209530476416583224
4826294526436319
11572729168996
28620338984
7195714
1842

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Last modified July 7 16:09 EDT 2020. Contains 335496 sequences. (Running on oeis4.)