1,2

All positive terms are >= 10.

Table of n, a(n) for n=1..65.

The decimals for sqrt(2) are .414213562373095048|801688724... and 18 decimals are needed for all digits to occur so a(2) = 18.

The decimals for sqrt(143) are .9582607431|01398021... so a(143) = 10.

The largest term when n < 10^9 is a(232863046) = 229.

Sequence in context: A284493 A337523 A167336 * A003634 A338383 A338385

Adjacent sequences: A328684 A328685 A328686 * A328688 A328689 A328690

sign,base

Lars Blomberg, Oct 25 2019

approved