OFFSET
1,4
EXAMPLE
The distance between numbers and previous number with same number of primes (#,d): (2,0),(3,1),(4,0),(5,2),(6,2),(7,2),(8,0),(9,3),...So the sequence is: 0,1,0,2,2,2,0,3,...
CROSSREFS
KEYWORD
nonn
AUTHOR
Daniel Tisdale, Apr 27 2010
EXTENSIONS
Extended by Ray Chandler, May 05 2010
STATUS
approved