1,2

This is twice A217832, the latter being the main entry for this sequence.

Table of n, a(n) for n=1..36.

Index entries for sequences related to curling numbers

Cf. A217832.

Sequence in context: A189914 A286496 A318187 * A090129 A001137 A123593

Adjacent sequences: A217928 A217929 A217930 * A217932 A217933 A217934

nonn

N. J. A. Sloane, Oct 15 2012

approved