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A228405 as a triangular array

0
11
012
2235
024712
446101729
04814244170
881220345899169
0816284882140239408
1616244068116198338577985
01632569616428047881613932378

A228405 as a square array

010204080160
112244881616
2346812162432
57101420284056
12172434486896
29415882116164
7099140198280
169239338478
408577816
9851393
2378
010204080160
112244881616
2346812162432
57101420284056
12172434486896
29415882116164
7099140198280
169239338478
408577816
9851393
2378