OFFSET
0,1
COMMENTS
FORMULA
Conjectured:
For even n, a(n) = (14*n^2 + 21*n + 10)/2.
For odd n, a(n) = (14*n^2 + 21*n + 9)/2.
CROSSREFS
KEYWORD
nonn,more
AUTHOR
Scott R. Shannon, May 25 2024
STATUS
approved