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A121505 as a triangular array

1
00
010
0010
00000
000100
0000000
00000000
000001000
0000000000
00000000000
000000010000
000

A121505 as a square array

1000000000000
010000000000
01000000000
001000000
00000000
0001000
000000
00001
0000
000
00
0

A121505 as an upper right triangle

1000000000000
010000000000
01000000000
001000000
00000000
0001000
000000
00001
0000
000
00
0

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Last modified April 22 04:29 EDT 2019. Contains 322329 sequences. (Running on oeis4.)