OFFSET
0,2
COMMENTS
Central terms of triangle in A249111.
LINKS
Reinhard Zumkeller, Table of n, a(n) for n = 0..1000
PROG
(Haskell)
a248574 0 = 1
a248574 n = a027306 (n - 1) + a027306 n
CROSSREFS
KEYWORD
nonn
AUTHOR
Reinhard Zumkeller, Nov 14 2014
STATUS
approved