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%I #7 Jul 17 2020 00:34:05
%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_.
%H T. Harju and D. Nowotka, <a href="http://oldtucs.abo.fi/publications/attachment.php?fname=TR630.pdf">Counting bordered and primitive words with a fixed weight</a>, TUCS Technical Report, No 630, Turku, November 2004.
%H T. Harju and D. Nowotka, <a href="https://doi.org/10.1016/j.tcs.2005.03.040">Counting bordered and primitive words with a fixed weight</a>, 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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