A065792 a(1) = 9; for n > 1, a(n) is the square root of the smallest square > a(n-1)^2 with a(n-1)^2 forming its final digits.

9, 41, 1209, 469959, 176270001209, 6042408942999999530041, 16385871165869048127200000000000176270001209, 28444329561227422116741433513058707457037799999999999999999999993957591057000000469959

Offset: 1

Author

Klaus Brockhaus, Nov 19 2001

Keywords

• base
• nonn

Comments

a(n) = A050635(n+1) for n >= 1; a(n) = sqrt(A065791(n)).

Crossrefs

Cf. A050635, A065690, A065791, A065793.