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A333439
a(n) = A333438(n)/2.
3
2, 8, 98, 4112, 532270, 212372938, 263708907212, 1013068026356376, 11955420069208095720, 432101605951906251627394, 47778407166747833830058004150, 16149888968763663448192636077980754, 16675786862526496319891707194153887550752, 52568166380872328447478940416604864445574575710
OFFSET
2,1
CROSSREFS
KEYWORD
nonn
AUTHOR
Seiichi Manyama, Mar 21 2020
EXTENSIONS
a(11) and a(13) from Seiichi Manyama
More terms from Ed Wynn, Jun 29 2023
STATUS
approved