OFFSET
4,2
LINKS
Andrew Howroyd, Table of n, a(n) for n = 4..100
G. Brinkmann and B. D. McKay, Fast generation of planar graphs (expanded edition), Table 27, Column d'1.
PROG
(PARI) A341923AntidiagonalSums(25) \\ See links in A342053 for program.
CROSSREFS
KEYWORD
nonn
AUTHOR
Andrew Howroyd, Feb 26 2021
STATUS
approved