login

A087623 as a triangular array

0
01
002
0002
00014
000002
0000026
00000104
000000026
0000000004
000000012410
000000

A087623 as a square array

000000000000
10000000000
2000000000
210000000
40000000
2210000
60000
4201
602
44
10
000000000000
10000000000
2000000000
210000000
40000000
2210000
60000
4201
602
44
10