A323944 - OEIS

%I #5 Feb 09 2019 22:53:27

%S 1,1,1,2,3,3,1,4,8,12,5,2,10,29,48,36,15,3,25,95,193,185,114,32,6,70,

%T 329,757,933,706,316,80,10,196,1094,2896,4239,3960,2304,866,176,20,

%U 574,3659,10834,18468,20313,14787,7184,2238,408,36,1681,12029,39697,76788,97740,84672,51060,20929,5688,896,72

%N Irregular triangle read by rows: Numbers of unbranched k-5-catafusenes.

%e Triangle begins:

%e 1, 1, 1,

%e 2, 3, 3, 1,

%e 4, 8, 12, 5, 2,

%e 10, 29, 48, 36, 15, 3,

%e 25, 95, 193, 185, 114, 32, 6,

%e 70, 329, 757, 933, 706, 316, 80, 10,

%e 196, 1094, 2896, 4239, 3960, 2304, 866, 176, 20,

%e 574, 3659, 10834, 18468, 20313, 14787, 7184, 2238, 408, 36,

%e 1681, 12029, 39697, 76788, 97740, 84672, 51060, 20929, 5688, 896, 72,

%e ...

%Y First column is A001998.

%K nonn,tabf

%O 2,4

%A _N. J. A. Sloane_, Feb 09 2019