1,1

Table of n, a(n) for n=1..51.

Cf. A002193, A011189, A011191.

Sequence in context: A017005 A131189 A288484 * A085960 A051386 A003325

Adjacent sequences: A011190 A011191 A011192 * A011194 A011195 A011196

nonn,changed

N. J. A. Sloane.

Offset corrected and more terms from Sean A. Irvine, Jun 14 2018

approved