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A013618 as a triangular array

1
111
122121
1333631331
144726532414641
15512101331073205161051
1661815266202196159663061771561
17725414658551243533820711240092719487171
1883388745361024870901885649603708155897368214358881

A013618 as a square array

111111111
1122334455667788
1213637261210181525413388
1331532413310266204658574536
14641732052196155124351024870
16105196630633820719018856
17715611240092749603708
19487171155897368
214358881

A013618 as an upper right triangle

111111111
1122334455667788
1213637261210181525413388
1331532413310266204658574536
14641732052196155124351024870
16105196630633820719018856
17715611240092749603708
19487171155897368
214358881

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Last modified March 28 13:42 EDT 2024. Contains 371254 sequences. (Running on oeis4.)