A141256 - OEIS

A141256

An Okazaki-like composition, see A126759.

1, 2, 2, 2, 2, 2, 2, 3, 2, 2, 2, 4, 2, 5, 3, 2, 2, 6, 2, 7, 2, 3, 4, 8, 2, 2, 5, 2, 3, 9, 2, 10, 2, 4, 6, 3, 2, 11, 7, 5, 2, 12, 3, 13, 4, 2, 8, 14, 2, 15, 2, 6, 5, 16, 2, 4, 3, 7, 9, 17, 2, 18, 10, 3, 2, 5, 4, 19, 6, 8, 3, 20, 2, 21, 11, 2, 7, 22, 5, 23, 2, 2, 12, 24, 3, 6, 13, 9, 4, 25, 2, 26, 8, 10, 14

(list; graph; refs; listen; history; text; internal format)

OFFSET

0,2

COMMENTS

a(5*n) = a(3*n) = a(2*n) = a(n);

for n with GCD(n,30)=1: a(n+30*k)=a(n)+8*k, note: 30=2*3*5,

A000010(30)=8;

for k>1: a(A007775(k-1))=k and a(m)<k for m < A007775(k-1).

LINKS

R. Zumkeller, Table of n, a(n) for n = 0..10000

FORMULA

a(n) = if n=0 then 1 else if GCD(n,30)>1 then a(LPD(n)) else 2*floor(n/30) + (if n mod 30 = 1 then 2 else IP(n)-1), with IP=A049084, LPD=A032742 and GCD=A050873.

CROSSREFS

Sequence in context: A068049 A297850 A171092 * A122921 A174273 A108128

Adjacent sequences: A141253 A141254 A141255 * A141257 A141258 A141259

KEYWORD

nonn

AUTHOR

Reinhard Zumkeller, Jun 17 2008

STATUS

approved