A160558 a(n) is the ordinal number of series in which the value of A160348(n) is defined

0, 1, 1, 2, 3, 2, 2, 4, 2, 5, 6, 4, 7, 8, 5, 8, 9, 4, 10, 11, 8, 12, 13, 8, 12, 14, 4, 15, 16, 11, 8, 17, 12, 11, 18, 8, 19, 20, 14, 21, 22, 15, 20, 23, 11, 8, 24, 17, 25

Offset

0,4

Comments

a(n)>=a((f(2n+1)-1)/2), where f is defined as in A159885. E.g., for n=4, we have a(4)=3>a(((9*3+1)/4-1)/2)=a(3)=2.

Links

Table of n, a(n) for n=0..48.

Example

Put a(0)=0. According to example to A160348, in the first series we find A160348(1) and A160348(2), therefore a(1)=a(2)=1. In the second series we find A160348(3), A160348(5), A160348(6) and A160348(8), thus a(3)=a(5)=a(6)=a(8)=2.

Crossrefs

Cf A160348 A160322 A160266 A160267 A259667 A159945 A160198 A006519 A122458.

Sequence in context: A212174 A368713 A368039 * A241019 A023581 A023574

Adjacent sequences: A160555 A160556 A160557 * A160559 A160560 A160561

Keyword

nonn,uned

Author

Vladimir Shevelev, May 19 2009

Status

approved