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A080511 as a triangular array

1
13
123
1236
12345
123459
1234567
123456712
123456789
12345678915
1234567891011
123456789101118
12345678910111213
1234567891011121321

A080511 as a square array

11111111111111
3222222222222
333333333333
64444444444
5555555555
966666666
77777777
12888888
999999
1510101010
11111111
181212
1313
21

A080511 as an upper right triangle

11111111111111
3222222222222
333333333333
64444444444
5555555555
966666666
77777777
12888888
999999
1510101010
11111111
181212
1313
21

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Last modified June 24 05:39 EDT 2019. Contains 324318 sequences. (Running on oeis4.)