1,1

See A281854.

Compare this with A046072(A033949(n)). In

A046072 the decompositions used are not total, e.g., n = 6 with A033949(6) = 1 uses C_6, but C_6 = C_2 x C_3. Or, 21 = A033949(6), A046072(21) = 2 not 3 = a(6).

Table of n, a(n) for n=1..70.

Cf. A033949, A046072, A281854, A282623, A282624, A282625.

Sequence in context: A078640 A006374 A193677 * A137921 A064876 A262689

Adjacent sequences: A281852 A281853 A281854 * A281856 A281857 A281858

nonn,more

Wolfdieter Lang, Mar 03 2017

approved