OFFSET
0,4
EXAMPLE
The a(1) = 1 through a(10) = 7 partitions:
1 11 3 31 5 51 7 53 9 73
111 1111 311 3111 511 71 531 91
11111 111111 31111 5111 711 5311
1111111 311111 51111 7111
11111111 3111111 511111
111111111 31111111
1111111111
MATHEMATICA
pwcop[y_]:=And@@(GCD@@#==1&)/@Subsets[y, {2}]
Table[Length[Select[IntegerPartitions[n], And@@OddQ/@#&&pwcop[#]&]], {n, 0, 30}]
CROSSREFS
KEYWORD
nonn
AUTHOR
Gus Wiseman, Nov 01 2023
STATUS
approved