OFFSET
0,2
REFERENCES
B. N. Cyvin et al., Isomer enumeration of unbranched catacondensed polygonal systems with pentagons and heptagons, Match, No. 34 (Oct 1996), pp. 109-121.
FORMULA
Row sums: sum_{j=0..i} T(i,j) = A001027(i). [From R. J. Mathar, Mar 30 2009]
CROSSREFS
KEYWORD
AUTHOR
STATUS
approved