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A178515 as a triangular array

1
20
400
9100
215000
51250000
12710500000
3234202100000
8351596189000000
2188588014280000000
579821120877800000000
155117441548741148500000000
41835258115249249193050

A178515 as a square array

12492151127323835218857981551141835
001525105420159658802112074415258115
00000211891428877848741249249
00000000148519305
000000000
0000000
000000
00000
0000
000
00
0

A178515 as an upper right triangle

12492151127323835218857981551141835
001525105420159658802112074415258115
00000211891428877848741249249
00000000148519305
000000000
0000000
000000
00000
0000
000
00
0

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Last modified October 17 01:30 EDT 2018. Contains 316275 sequences. (Running on oeis4.)