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A292695
a(n) = A258223(2n,n).
2
1, 8, 1749, 1944225, 6439957299, 47971886252910, 677927299391810160, 16243385150174371081830, 609634394448842168438414483, 33797743985046745897969800271770, 2645657421035128682909045799293446355, 282144864134810484141733900449168244617439
OFFSET
0,2
LINKS
CROSSREFS
Cf. A258223.
Sequence in context: A061719 A050642 A050648 * A070903 A159386 A160302
KEYWORD
nonn
AUTHOR
Alois P. Heinz, Sep 20 2017
STATUS
approved