A159994 Numerator of f(A159992(n)/A159993(n)) with f(x)=x^3+2*x^2+10*x-20, denominator=A159995.

-7, -1219, -193885217, -2512095067, -10152983807749, -249880575515347, -2950249420928771944181, -5129149052857317896107, -1247467412339070464235923, -16941291362994850503969493637

Offset

0,1

Comments

a(n)/A159995(n) = f(A159992(n)/A159993(n));

a(n)/A159995(n) < 0; a(n)/A159995(n) <= a(n+1)/A159995(n+1);

a(n)/A159995(n) --> 0.

Links

R. Zumkeller, Table of n, a(n) for n = 0..30

Example

a(0)/A159995(0)=-7;
a(1)/A159995(1)=-1216/27000;
a(2)/A159995(2)=-193885217/46656000000;
a(3)/A159995(3)=-2512095067/46656000000000;
a(4)/A159995(4)=-10152983807749/80621568000000000000;
a(5)/A159995(5)=-249880575515347/14348907000000000000000;
a(6)/A159995(6)=-2950249420928771944181/12694994583552000000000000000000;
a(7)/A159995(7)=-5129149052857317896107/812479653347328000000000000000000;
a(8)/A159995(8)=-1247467412339070464235923/37907050706572935168000000000000000000;
written as decimal fractions:
a(1)/A159995(1) ~= -0.045037037037037037037037;
a(2)/A159995(2) ~= -0.004155633080418381344307;
a(3)/A159995(3) ~= -0.000053842915530692729766;
a(4)/A159995(4) ~= -0.000000125933842017920068;
a(5)/A159995(5) ~= -0.000000017414606946392990;
a(6)/A159995(6) ~= -0.000000000232394697099847;
a(7)/A159995(7) ~= -0.000000000006312956923568;
a(8)/A159995(8) ~= -0.000000000000032908585318.

Crossrefs

A159990.

Sequence in context: A144927 A202133 A229431 * A278178 A190266 A119181

Adjacent sequences: A159991 A159992 A159993 * A159995 A159996 A159997

Keyword

frac,sign

Author

Reinhard Zumkeller, May 01 2009

Status

approved