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A227040 as a simple table

n a(n)
0 1
1 4562497
2 20816383437505
3 94974707800845124993
4 433321914391919464706875009
5 1977030367769208799178386969687489
6 9020197098885846285919400272960522312513
7 41154631223270498877446922697782658742826249985

[1,4562497,20816383437505,94974707800845124993,
 433321914391919464706875009,
 1977030367769208799178386969687489,
 9020197098885846285919400272960522312513,
 41154631223270498877446922697782658742826249985]

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Last modified April 5 19:46 EDT 2020. Contains 333257 sequences. (Running on oeis4.)