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A138947 as a triangular array

1
42
673
813175
919415911
10236717927731
12298333110631787127
14371094312221852715299709
154315759930011957787803

A138947 as a square array

1468910121415
27131923293743
317416783109157
559179331431599
11277106322213001
311787852719577
1271529987803
709

A138947 as an upper right triangle

1468910121415
27131923293743
317416783109157
559179331431599
11277106322213001
311787852719577
1271529987803
709

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Last modified September 21 02:46 EDT 2020. Contains 337266 sequences. (Running on oeis4.)