A216959 - OEIS

%I #16 May 05 2024 01:46:10

%S 1,1,2,3,5,10,18,36,71,140,280,557,1111,2218,4432,8859,17710,35412,

%T 70812,141605,283197,566364,1132695,2265363,4530659,9061259,18122454,

%U 36244783,72489435,144978745,289957235,579914215,1159828166,2319655810,4639311084,9278621655

%N a(n) = A216958(n)/2.

%H Amiram Eldar, <a href="/A216959/b216959.txt">Table of n, a(n) for n = 1..100</a> (calculated using the b-file at A216958)

%H <a href="/index/Cu#curling_numbers">Index entries for sequences related to curling numbers</a>.

%Y Cf. A216958.

%K nonn

%O 1,3

%A _N. J. A. Sloane_, Sep 27 2012