OFFSET
1,2
LINKS
Paul D. Hanna, Table of n, a(n) for n = 1..70
FORMULA
a(n) = A291820(n+2, n-1) for n >= 1.
a(n) = A277297(n) / 2 for n >= 1. - Paul D. Hanna, Jul 24 2023
PROG
CROSSREFS
KEYWORD
nonn
AUTHOR
Paul D. Hanna, Sep 01 2017
STATUS
approved