1,3
Index entries for sequences related to numbers of primes in various ranges
a(12)=50408 because there are 50408 prime-sextuplets up to 10^12.
Cf. A022008, initial members of prime-sextuplets
Sequence in context: A164904 A188164 A083849 * A103892 A000403 A068763
Adjacent sequences: A063498 A063499 A063500 * A063502 A063503 A063504
nonn
Martin Raab (raab-hausen(AT)t-online.de), Jul 30 2001
2 more terms from Martin Raab (raab-martin(AT)gmx.de), Oct 06 2005