Table of n, a(n) for n=1..4.
22 is in the sequence because 22 occurs at offset 484 (22^2) after the decimal point in the digits of Pi.
Cf. A057679, A057680, A109513, A109514.
Sequence in context: A119770 A272659 A233748 * A195462 A276749 A232016
Adjacent sequences: A153227 A153228 A153229 * A153231 A153232 A153233
Gil Broussard, Dec 21 2008