OFFSET
1,6
EXAMPLE
a(6) counts these partitions: 421, 331, 3211, 31111.
MATHEMATICA
Table[Count[IntegerPartitions[n], p_ /; MemberQ[p, Max[p] - 2*Min[p]]], {n, 50}]
CROSSREFS
KEYWORD
nonn,easy
AUTHOR
Clark Kimberling, Mar 02 2014
STATUS
approved