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A222898 as a triangular array

2
00
050
0220
00800
000000
000251000
000444444000
0009721872972000
00075289208920752000
00037260647204526064372000
00064041096044109604064000
000

A222898 as a square array

2000000000000
052000000000
02800000000
00025144497275237264
0004441872892060640
00097289207204524109604
00075260644109604
0003720
00064
000
00
0

A222898 as an upper right triangle

2000000000000
052000000000
02800000000
00025144497275237264
0004441872892060640
00097289207204524109604
00075260644109604
0003720
00064
000
00
0

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Last modified July 14 16:21 EDT 2020. Contains 335729 sequences. (Running on oeis4.)