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”).

A165441 as a triangular array

1
44
919
16363616
251611625
3610014414410036
4992251225949
64196124004001219664
816444114411444416481
100324576784900900784576324100
121258164122511225648125121

A165441 as a square array

149162536496481100121
41361610091966432425
93611442251244157681
1616144140014478464
2510022540019001225
369121449001
491964417841225
646457664
8132481
10025
121
149162536496481100121
41361610091966432425
93611442251244157681
1616144140014478464
2510022540019001225
369121449001
491964417841225
646457664
8132481
10025
121