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A081493 as a triangular array

1
23
357
471013
59131721
61116212631
7131925313743
815222936435057
91725334149576573
10192837465564738291
112131415161718191101111
1223344556677889

A081493 as a square array

123456789101112
357911131517192123
7101316192225283134
131721252933374145
2126313641465156
31374349556167
435057647178
5765738189
738291
91101
111
123456789101112
357911131517192123
7101316192225283134
131721252933374145
2126313641465156
31374349556167
435057647178
5765738189
738291
91101
111

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Last modified September 20 18:47 EDT 2024. Contains 376075 sequences. (Running on oeis4.)