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 A102416 Triangle read by rows: the numbers B_2(n,k) from the Harju and Nowotka paper. 3

%I

%S 2,2,4,2,16,4,28,6,4,56,14,8,108,30,16,6,216,60,28,12,424,124,60,24,

%T 12,848,248,128,48,24,1684,492,244,90,48,20,3368,984,512,186,96,40,

%U 6712,1960,1000,384,192,80,40,13424,3920,2032,756,372,160,80,26808

%N Triangle read by rows: the numbers B_2(n,k) from the Harju and Nowotka paper.

%C It took a while to get these numbers and I cannot find the paper now, so do not have a more precise description. - _N. J. A. Sloane_.

%D T. Harju and D. Nowotka, Counting bordered and primitive words with a fixed weight, Preprint, Oct 28, 2004

%D T. Harju and D. Nowotka, Counting bordered and primitive words with a fixed weight, Theoret. Comput. Sci. 340 (2005), no. 2, 273-279.

%e Triangle begins:

%e 2

%e 2

%e 4, 2

%e 16, 4

%e 28, 6, 4

%e 56, 14, 8

%e 108, 30, 16, 6

%e 216, 60, 28, 12

%e 424, 124, 60, 24, 12

%e 848, 248, 128, 48, 24

%e 1684, 492, 244, 90, 48, 20

%Y Cf. A102864, A103179.

%K nonn,tabf

%O 0,1

%A _N. J. A. Sloane_, Mar 17 2005

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Last modified December 10 23:29 EST 2019. Contains 329910 sequences. (Running on oeis4.)