OFFSET
1,2
COMMENTS
This sequence is somewhat analogous to the smallest prime factor of n (A020639). However, each natural number has only one ludic factor, because once it is crossed off in the k-th step of the sieve process, it is not a member of the terms considered in the (k+1)-th step.
On the other hand, by iteratively invoking A302032 it is possible to factor n to its constituent "Ludic factors", with each natural number having a unique such decomposition, analogous to prime factorization of n. See comments and examples given in A302032. - Antti Karttunen, Apr 08 2018
LINKS
Max Barrentine, Table of n, a(n) for n = 1..10000
OEIS Wiki, Ludic numbers.
FORMULA
PROG
CROSSREFS
KEYWORD
nonn
AUTHOR
Max Barrentine, May 09 2016
STATUS
approved