login

A128308 as a triangular array

1
11
221
6431
1910741
5929171151
1808846281661
54426813474442271
1637812402208118662981
491724491214610326184953791

A128308 as a square array

1126195918054416374917
1241029882688122449
13717461344021214
14112874208610
151644118326
162266184
172995
1837
19
1
1126195918054416374917
1241029882688122449
13717461344021214
14112874208610
151644118326
162266184
172995
1837
19
1