login
A081001
n is in the sequence if and only if it does not rank among the top n positive integers in centrality (cf. A080997 for fuller explanation of this concept).
3
5, 7, 9, 11, 13, 17, 19, 22, 23, 25, 26, 29, 31, 33, 34, 35, 37, 38, 39, 41, 43, 46, 47, 49, 51, 53, 55, 57, 58, 59, 61, 62, 65, 67, 69, 71, 73, 74, 77, 79, 81, 82, 83, 85, 86, 87, 89, 91, 92, 93, 94, 95, 97, 101, 103, 106, 107, 109, 111, 113, 115, 116, 118, 119
OFFSET
1,1
COMMENTS
Complement of A081000.
FORMULA
Formula for the centrality of n: A018804(n)/n^2 (see also A080997).
CROSSREFS
Cf. A080997, A080998, also A081028 for centrality ranks of primes (all of which are members of this sequence except 2 and 3).
Sequence in context: A282057 A336366 A088502 * A075025 A075394 A158439
KEYWORD
nonn
AUTHOR
Matthew Vandermast, Mar 02 2003
STATUS
approved