OFFSET
1,2
EXAMPLE
a(6) counts these partitions: 6, 51, 411, 33, 3111, 222, 111111.
MATHEMATICA
Table[Count[IntegerPartitions[n], p_ /; !MemberQ[p, Max[p] - Min[p]]], {n, 50}]
CROSSREFS
KEYWORD
nonn,easy
AUTHOR
Clark Kimberling, Feb 27 2014
STATUS
approved