OFFSET
1,1
COMMENTS
The m-th prime is a term iff A100714(m) <= 7.
Missing primes begin 661, 677, 683, 853, 1109, 1193, 1237, 1301, 1321, 1361, 1367, 1373, .... - Charles R Greathouse IV, Oct 19 2015
LINKS
Eric Weisstein's World of Mathematics, Run-Length Encoding.
EXAMPLE
a(3)=5 is a term because it is the 3rd prime whose binary representation splits into at most 7 runs: 5_10 = 101_2.
MATHEMATICA
Select[Table[Prime[k], {k, 1, 50000}], Length[Split[IntegerDigits[ #, 2]]] <= 7 &]
PROG
(PARI) is(n)=hammingweight(bitxor(n, n>>1))<8 && isprime(n) \\ Charles R Greathouse IV, Oct 19 2015
CROSSREFS
KEYWORD
base,nonn
AUTHOR
Joseph Biberstine (jrbibers(AT)indiana.edu), Dec 11 2004
STATUS
approved