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A104568 as a triangular array

1
31
431
6431
76431
976431
10976431
1210976431
131210976431
15131210976431
1615131210976431
181615131210976431
19181615131210976431

A104568 as a square array

13467910121315161819
134679101213151618
1346791012131516
13467910121315
134679101213
1346791012
13467910
134679
13467
1346
134
13
1

A104568 as an upper right triangle

13467910121315161819
134679101213151618
1346791012131516
13467910121315
134679101213
1346791012
13467910
134679
13467
1346
134
13
1

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Last modified May 25 02:01 EDT 2020. Contains 334581 sequences. (Running on oeis4.)