OFFSET
0,2
MATHEMATICA
Ceiling[(Power[10, (4 )^-1])^Range[0, 50]] (* Harvey P. Dale, Mar 18 2011 *)
PROG
(PARI) a(n) = sqrtnint(10^n-1, 4) + 1; \\ Michel Marcus, Jun 26 2024
CROSSREFS
KEYWORD
nonn
AUTHOR
EXTENSIONS
More terms from Michel Marcus, Aug 21 2019
STATUS
approved