OFFSET
0,2
FORMULA
a(n)=2^(comb(n+1,2)+0^n-1)*(2+floor((n+1)/2)-0^n)
MAPLE
A138392 := proc(n)
2^(binomial(n+1, 2)+0^n-1)*(2+floor((n+1)/2)-0^n) ;
end proc:
seq(%(n), n=0..13) ; # R. J. Mathar, Feb 23 2015
CROSSREFS
KEYWORD
easy,nonn
AUTHOR
Paul Barry, Mar 18 2008
STATUS
approved