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A175757 as a triangular array

1
21
631
201241
75502051
3122251003061
142110925251754271
70165684291210502805681
372603157217052655218904207291
2114701863001052404263013104315060090101

A175757 as a square array

12620753121421701637260211470
1312502251092568431572186300
1420100525291217052105240
15301751050655242630
1642280189013104
17564203150
1872600
1990
110
1

A175757 as an upper right triangle

12620753121421701637260211470
1312502251092568431572186300
1420100525291217052105240
15301751050655242630
1642280189013104
17564203150
1872600
1990
110
1

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Last modified December 14 03:31 EST 2019. Contains 329978 sequences. (Running on oeis4.)