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A146950
Terms of A061047 ending in 0.
1
0, 120, 240, 480, 680, 1040, 1320, 1800, 2160, 2760, 3200, 80, 4440, 5280, 120, 6840, 7520, 8600, 9360, 10560, 11400, 12720, 13640, 15080, 16080, 360, 18720, 20400, 440, 23360, 24600, 26520, 27840, 29880, 31280, 33440, 34920, 37200, 38760, 120
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
Sequence in context: A349745 A256814 A232743 * A028976 A158130 A070856
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