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A286398
Denominator of A285388(n+1)/A285388(n).
0
1, 7, 143, 7429, 94395, 70514711, 68421139647, 3628781953225, 180465781280744001, 1051696554978819009, 2043771643161196817, 455757414124192757820663, 145129235359794615466069, 1358004768744860147421669766123, 9043798410819212324167588503127725
OFFSET
1,2
EXAMPLE
a(2)=(7); a(3)=(11*13); a(4)=(17*19*23); a(5)=3*5*7*(29*31); ...
CROSSREFS
Cf. A285388.
Sequence in context: A082157 A258176 A333088 * A104240 A263599 A217341
KEYWORD
nonn
AUTHOR
Ralf Steiner, May 10 2017
STATUS
approved