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A277919 as a triangular array

1
11
321
7631
15161041
3140301551
639684502161
127224224154772871
2555125764482581123681
5111152144012488104051564591
10232560352033602420136260521055101

A277919 as a square array

11371531631272555111023
12616409622451211522560
1310308422457614403520
14155015444812483360
1521772588102420
16281124051362
1736156605
1845210
1955
110
1
11371531631272555111023
12616409622451211522560
1310308422457614403520
14155015444812483360
1521772588102420
16281124051362
1736156605
1845210
1955
110
1