OFFSET
1,3
LINKS
Fausto A. C. Cariboni, Table of n, a(n) for n = 1..1000
EXAMPLE
a(7)=5 because there are 5 such partitions of 7: {7}, {1,6}, {2,5}, {3,4}, {4,2,1}.
MATHEMATICA
<< DiscreteMath`Combinatorica`; np[n_]:= Length@Select[Mod[ #, 6]& /@ Partitions[n], (Length@# != Length@Union@#)&]; lst = Array[np, 50]
CROSSREFS
KEYWORD
nonn
AUTHOR
Giovanni Resta, Feb 06 2006
STATUS
approved