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.
The House of Graphs, Planar graphs
PROG
(PARI) A342053AntidiagonalSums(25) \\ See links in A342053 for program.
CROSSREFS
KEYWORD
nonn
AUTHOR
Andrew Howroyd, Feb 26 2021
STATUS
approved