OFFSET
0,1
COMMENTS
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.
LINKS
T. Harju and D. Nowotka, Counting bordered and primitive words with a fixed weight, TUCS Technical Report, No 630, Turku, November 2004.
T. Harju and D. Nowotka, Counting bordered and primitive words with a fixed weight, Theoret. Comput. Sci. 340 (2005), no. 2, 273-279.
EXAMPLE
Triangle begins:
2
2
4, 2
16, 4
28, 6, 4
56, 14, 8
108, 30, 16, 6
216, 60, 28, 12
424, 124, 60, 24, 12
848, 248, 128, 48, 24
1684, 492, 244, 90, 48, 20
CROSSREFS
KEYWORD
nonn,tabf
AUTHOR
N. J. A. Sloane, Mar 17 2005
STATUS
approved