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A181661 as a triangular array

1
22
653
231774
956824105
4002849535136
1692119939614146157
71655075167159018653188
30349214947072249277821464209
1285589104629951105493286896259712310
544578

A181661 as a square array

12623954001692716530349128558544578
251768284119950752149491046
3724953961671707229951
41035141590249210549
513461867783286
61553214896
71864259
82071
923
10

A181661 as an upper right triangle

12623954001692716530349128558544578
251768284119950752149491046
3724953961671707229951
41035141590249210549
513461867783286
61553214896
71864259
82071
923
10

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Last modified April 22 10:24 EDT 2019. Contains 322330 sequences. (Running on oeis4.)