A077111 a(n) = A077110(n) - n^2.

0, 0, -3, -1, -8, 2, -9, 15, 0, -17, 25, 4, -19, -44, 20, -9, -40, 54, 19, -18, -57, 71, 28, -17, -64, 104, 53, 0, -55, -112, 100, 39, -24, -89, -156, 106, 35, -38, -113, -190, 128, 47, -36, -121, -208, 172, 81, -12, -107, -204, 244, 143, 40, -65, -172

Offset

0,3

Comments

a(n)=0 iff n = m^(6*k).

Links

Table of n, a(n) for n=0..54.

Formula

a(n) = if A075847(n) < A070923(n) then -A075847(n) else A070923(n).

Example

A077110(20)=343=7^3 is the nearest cube to 20^2=400, therefore a(20)=343-400=-57.

Crossrefs

Cf. A000290, A077110, A077119.

Sequence in context: A200064 A242072 A248584 * A073072 A273927 A293975

Adjacent sequences: A077108 A077109 A077110 * A077112 A077113 A077114

Keyword

sign

Author

Reinhard Zumkeller, Oct 29 2002

Status

approved