OFFSET
1,4
EXAMPLE
a(6) counts these partitions: 71, 521, 41111.
MATHEMATICA
Table[Count[IntegerPartitions[n], p_ /; MemberQ[p, Length[p]-Min[p]]], {n, 50}]
PROG
(PARI) a(n) = {my(nb = 0); forpart(p=n, if (vecsearch(Vec(p), #p-vecmin(p)), nb++); ); nb; } \\ Michel Marcus, Jun 18 2015
CROSSREFS
KEYWORD
nonn,easy
AUTHOR
Clark Kimberling, Feb 28 2014
STATUS
approved