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A121554 as a triangular array

1
01
101
2211
77631
3035301861
15720518411746101
97213921304874381101151
69611076410499735534701052197211
5666093493946686890934622116062542351281
516901901900

A121554 as a square array

1012730157972696156660516901
10273520513921076493493901900
1163018413041049994668
1318117874735568909
1646381347034622
110101105211606
1151972542
121351
128
1
1012730157972696156660516901
10273520513921076493493901900
1163018413041049994668
1318117874735568909
1646381347034622
110101105211606
1151972542
121351
128
1