A270808 - OEIS

%I #7 Apr 06 2016 12:55:21

%S 1,1,1,1,2,1,2,1,2,3,1,2,1,2,1,5,3,1,5,1,8,4,5,1,2,3,6,4,2,3,1,5,1,8,

%T 1,2,6,1,2,3,1,2,4,23,1,11,3,4,2,1,23,10,2,18,1,5,1,8,6,1,8,7,23,1,2,

%U 1,5,7,2,1,2,6,18,1,2,25,2,1,32,1,17,7,2,1,2,10,14,3,7,8

%N First differences of A270807, divided by 2.

%H Chai Wah Wu, <a href="/A270808/b270808.txt">Table of n, a(n) for n = 0..10000</a>

%o (Python)

%o from __future__ import division

%o from sympy import primefactors

%o A270808_list, a = [], 1

%o for i in range(10001):

%o     b = a//(max(primefactors(a)+[1])) + 1

%o     A270808_list.append(b//2)

%o     a += b # _Chai Wah Wu_, Apr 06 2016

%Y Cf. A270807.

%K nonn

%O 0,5

%A _N. J. A. Sloane_, Apr 05 2016