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%I #3 Jan 11 2022 18:25:13
%S 4,12,17,32,54,78,127,186,275,408,585,848,1212,1722,2444,3442,4839,
%T 6778,9462,13182,18313,25390,35133,48522,66907,92112,126632,173860,
%U 238404,326536,446765,610644,833846,1137614,1550739,2112210,2874807,3909948,5314221,7218208,9798372,13293086,18024236
%N G.f. = ((2+3*x)/(1-x^2-x^3))^2.
%D A. G. Shannon, P. G. Anderson and A. F. Horadam, Properties of Cordonnier, Perrin and Van der Laan numbers, International Journal of Mathematical Education in Science and Technology, Volume 37:7 (2006), 825-831. See Equation (3.12).
%K nonn
%O 0,1
%A _N. J. A. Sloane_, Jan 11 2022