login

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”).

A202064 as a triangular array

1
20
310
4400
510100
6206000
735211000
8565680000
9841263610000
101202521201000000
1116546233055100000

A202064 as a square array

1234567891011
0141020355684120165
00162156126252462
0001836120330
000011055
000001
00000
0000
000
00
0
1234567891011
0141020355684120165
00162156126252462
0001836120330
000011055
000001
00000
0000
000
00
0