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A020474 as a triangular array

1
01
012
0024
00159
00031221
000193051
000042576127
000011469196323
00000544189512835
0000012013351813532188
000000670392142236105798
0000

A020474 as a square array

1000000000000
110000000000
22100000000
4531000000
912941000
21302514510
51766944206
12719618913370
323512518392
83513531422
21883610
5798

A020474 as an upper right triangle

1000000000000
110000000000
22100000000
4531000000
912941000
21302514510
51766944206
12719618913370
323512518392
83513531422
21883610
5798

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Last modified February 21 04:22 EST 2018. Contains 299389 sequences. (Running on oeis4.)