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A305749 as a triangular array

1
11
121
1221
12341
123641
1237981
1237111881
1237122727161
123712304354161
123712315510781321
1237123158141171162321
1237123159159266427243641
1237123159163312688683486641

A305749 as a square array

11111111111111
1222222222222
123333333333
14677777777
14911121212121212
1818273031313131
18274355585959
11654107141159163
11681171266312
132162427688
132243683
164486
164
1
11111111111111
1222222222222
123333333333
14677777777
14911121212121212
1818273031313131
18274355585959
11654107141159163
11681171266312
132162427688
132243683
164486
164
1