1,5
Eric Weisstein's World of Mathematics, Hi-Q
Sequence in context: A017567 A081867 A133972 * A186062 A204787 A060232
Adjacent sequences: A056745 A056746 A056747 * A056749 A056750 A056751
hard,nonn,more
David W. Wilson (davidwwilson(AT)comcast.net), Aug 15 2000