Table of n, a(n) for n=1..8.
a(3)=21 because it is the first integer divisible by 7 which is obtained from the beginning of the unused part of the decimal extension of square root 2.
Sequence in context: A157427 A003905 A205702 * A040183 A022348 A214463
Adjacent sequences: A099200 A099201 A099202 * A099204 A099205 A099206
Serhat Sevki Dincer (mesti_mudam(AT)yahoo.com), Oct 04 2004