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Year-end appeal: Please make a donation to the OEIS Foundation to support ongoing development and maintenance of the OEIS. We are now in our 61st year, we have over 378,000 sequences, and we’ve reached 11,000 citations (which often say “discovered thanks to the OEIS”).

A104975 as a triangular array

1
01
-101
0-101
10-101
010-101
-2010-101
0-2010-101
30-2010-101
030-2010-101
-4030-2010-101
0-4030-2010-101
60-4030-2010-101
060-4030-2010-101
-10060-4030-2

A104975 as a square array

10-1010-2030-4060-10
10-1010-2030-4060
10-1010-2030-406
10-1010-2030-40
10-1010-2030-4
10-1010-2030
10-1010-203
10-1010-20
10-1010-2
10-101
10-10
10-1
10
1
10-1010-2030-4060-10
10-1010-2030-4060
10-1010-2030-406
10-1010-2030-40
10-1010-2030-4
10-1010-2030
10-1010-203
10-1010-20
10-1010-2
10-101
10-10
10-1
10
1