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A181930 as a triangular array

1
01
011
0021
04431
000451
0162012651
000482026101
009640524436111
000724866342291
0576720392384188154702691
00000480848560

A181930 as a square array

100000000000
11040160005760
12402009607200
134124840723920
1562052483840
15264466188480
1103634154848
1112270560
1926
19
1

A181930 as an upper right triangle

100000000000
11040160005760
12402009607200
134124840723920
1562052483840
15264466188480
1103634154848
1112270560
1926
19
1

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Last modified October 22 05:29 EDT 2019. Contains 328315 sequences. (Running on oeis4.)