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A121520 as a simple table

n a(n)
0 1
1 11
2 10201
3 1003003001
4 10004000600040001
5 10000500010000100000500001
6 1000006000015000020000015000006000001
7 10000007000002100000350000035000002100000070000001 

[1,11,10201,1003003001,10004000600040001,
 10000500010000100000500001,
 1000006000015000020000015000006000001,
 10000007000002100000350000035000002100000070000001\
 ]

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Last modified July 27 09:41 EDT 2024. Contains 374644 sequences. (Running on oeis4.)