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A279408 as a triangular array

1
11
111
2223
22244
222444
3335567
33366688
333666999
44477810111214
4448881111121515
444888121212161616
555991013141518192022

A279408 as a square array

1112223334445
112223334445
12223334445
3445667889
445667889
466688810
78910111213
8911111214
912121215
14151618
151619
1620
22

A279408 as an upper right triangle

1112223334445
112223334445
12223334445
3445667889
445667889
466688810
78910111213
8911111214
912121215
14151618
151619
1620
22

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Last modified April 24 18:03 EDT 2019. Contains 322430 sequences. (Running on oeis4.)