A333439 a(n) = A333438(n)/2.

2, 8, 98, 4112, 532270, 212372938, 263708907212, 1013068026356376, 11955420069208095720, 432101605951906251627394, 47778407166747833830058004150, 16149888968763663448192636077980754, 16675786862526496319891707194153887550752, 52568166380872328447478940416604864445574575710

Offset: 2

Author

Seiichi Manyama, Mar 21 2020

Keywords

• nonn

Links

• Ed Wynn, Table of n, a(n) for n = 2..19

Crossrefs

Cf. A271507, A333246, A333438.

Extensions

a(11) and a(13) from Seiichi Manyama

More terms from Ed Wynn, Jun 29 2023