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A209492 as a triangular array

1
35
7911
15171923
3133353947
636567717995
127129131135143159191
255257259263271287319383
511513515519527543575639767
1023102510271031103910551087115112791535
20472049205120552063207921112175230325593071

A209492 as a square array

13715316312725551110232047
5917336512925751310252049
1119356713125951510272051
23397113526351910312055
477914327152710392063
9515928754310552079
19131957510872111
38363911512175
76712792303
15352559
3071
13715316312725551110232047
5917336512925751310252049
1119356713125951510272051
23397113526351910312055
477914327152710392063
9515928754310552079
19131957510872111
38363911512175
76712792303
15352559
3071