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A082900 a(n) = A082894(n)-A000079(n), that is difference of 2^n and the number closest to it and divisible by n. 6
0, 0, 1, 0, -2, 2, -2, 0, 1, -4, -2, -4, -2, -4, 7, 0, -2, 8, -2, 4, -8, -4, -2, 8, -7, -4, 1, 12, -2, -4, -2, 0, -8, -4, 17, 8, -2, -4, -8, -16, -2, 20, -2, -16, -17, -4, -2, -16, 19, -24, -8, -16, -2, 26, 12, 24, -8, -4, -2, -16, -2, -4, -8, 0, -32, 2, -2, -16, -8, 26, -2, 8, -2, -4, 7, -16, -18, 14, -2, -16, 1, -4, -2, 20, -32, -4, -8 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,5

COMMENTS

n=5:2^5=32 and number divisible by n=5 and closest to 32 is 30 = A082894(5), a(5)=30-32=-2 is the corresponding difference.

LINKS

Table of n, a(n) for n=1..87.

FORMULA

a(n)=n*floor[(floor(n/2)+2^n)/n]-2^n

MATHEMATICA

Table[n*Floor[(Floor[n/2]+2^n)/n]-2^n, {n, 1, 100}]

CROSSREFS

Cf. A082893-A082901.

Sequence in context: A056557 A302986 A295305 * A171958 A301735 A133625

Adjacent sequences:  A082897 A082898 A082899 * A082901 A082902 A082903

KEYWORD

sign

AUTHOR

Labos Elemer, Apr 22 2003

STATUS

approved

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Last modified March 26 01:08 EDT 2019. Contains 321479 sequences. (Running on oeis4.)