0,2
Table of n, a(n) for n=0..15.
Cf. A042218.
Sequence in context: A219872 A115739 A142202 * A198600 A213446 A060943
Adjacent sequences: A042216 A042217 A042218 * A042220 A042221 A042222
nonn,cofr,easy
N. J. A. Sloane.
approved