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A063501
Number of prime-sextuplets up to 10^n.
1
0, 1, 2, 2, 5, 5, 18, 82, 317, 1613, 8626, 50408, 303828, 1911246, 12432129, 83217782, 571314626
OFFSET
1,3
EXAMPLE
a(12)=50408 because there are 50408 prime-sextuplets up to 10^12.
CROSSREFS
Cf. A022008 (initial members of prime-sextuplets).
Sequence in context: A083849 A326512 A325983 * A103892 A000403 A068763
KEYWORD
nonn,more
AUTHOR
Martin Raab, Jul 30 2001
EXTENSIONS
2 more terms from Martin Raab, Oct 06 2005
a(17) from Norman Luhn, Nov 08 2021
STATUS
approved