OFFSET
1,2
FORMULA
a(n) = 40*A146952(n). - Andrew Howroyd, Jan 03 2020
MATHEMATICA
Select[Table[Numerator[1/49-1/n^2], {n, 7, 250}], Mod[#, 10]==0&] (* Harvey P. Dale, Jul 23 2024 *)
PROG
(PARI) seq(n)={my(L=List(), k=5); while(#L<n, k++; my(t=numerator(1/49 - 1/k^2)); if(t%10==0, listput(L, t))); Vec(L)} \\ Andrew Howroyd, Jan 03 2020
CROSSREFS
KEYWORD
nonn,base,less
AUTHOR
Paul Curtz, Nov 03 2008
EXTENSIONS
Offset corrected and terms a(11) and beyond from Andrew Howroyd, Jan 03 2020
STATUS
approved