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A085434
n-th even number not a power of 2 whose largest and smallest factors do not add or subtract to a twin prime.
1
46, 74, 94, 106, 134, 158, 166, 178, 194, 226, 254, 262, 314, 326, 334, 346, 422, 446, 466, 502, 514, 526, 554, 586, 614, 634, 662, 674, 706, 718, 734, 746, 758, 766, 778, 794, 802, 818, 878, 886, 898, 914, 934, 958, 974, 982, 998, 1006, 1018, 1082, 1094
OFFSET
6,1
COMMENTS
The density of these numbers approach 0 as n approaches oo.
PROG
(PARI) maxpmmintwin(n) = { c=0; forprime(p=3, n, if(!isprime(p-2) & !isprime(p+2), print1(p+p", "); c++); ); print(); print(c" "c/n+.0) }
CROSSREFS
Sequence in context: A101577 A051413 A167283 * A245372 A020351 A113691
KEYWORD
easy,nonn
AUTHOR
Cino Hilliard, Aug 13 2003
STATUS
approved