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A013581
Let P = 2*3*5*..*p_n = n-th primorial number (A002110), G = Z_2xZ_3x...xZ_{p_n}; a(n) = max{e in G} min{i : both e+i, e-i are relatively prime to P}.
0
1, 3, 9, 15, 33, 75, 90, 105, 165, 213
OFFSET
1,2
CROSSREFS
Sequence in context: A031159 A058039 A371349 * A350536 A133997 A057909
KEYWORD
nonn
AUTHOR
Paw Hermansen (paw(AT)imada.ou.dk)
EXTENSIONS
I added the two terms a(9)=165 and a(10)=213, which were found by a computer program that searched through all numbers. Michael Hovdan (michael.hovdan(AT)gmail.com), Aug 31 2009
STATUS
approved