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A133097 A005282(n) - A011185(n-1). 3
0, 0, 1, 3, 5, 8, 10, 15, 27, 28, 23, 28, 20, 30, 22, 40, 32, 45, 27, 62, 89, 62, 116, 167, 105, 118, 108, 51, 99, 151, 88, 137, 137, 265, 174, 195, 320, 321, 249, 283, 226, 281, 293, 394, 465, 369, 585, 565, 639, 404, 483, 221, 233, 428, 384, 370, 527, 431, 818 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,4

COMMENTS

Also A025582(n) - A010672(n-1).

A005282 is the sequence of smallest numbers such that the pairwise sums of not necessarily distinct elements are all distinct, whereas A011185 is the sequence of smallest numbers such that the pairwise sums of distinct elements are all distinct.

Sequence has negative terms; the first one is a(65) = -130.

LINKS

Klaus Brockhaus, Table of n, a(n) for n = 1..2400

EXAMPLE

a(6) = A005282(6) - A011185(6) = 21 - 13 = 8.

CROSSREFS

Cf. A005282, A011185, A025582, A010672, A133096.

Sequence in context: A190488 A182082 A117467 * A117176 A212987 A217919

Adjacent sequences:  A133094 A133095 A133096 * A133098 A133099 A133100

KEYWORD

sign

AUTHOR

Klaus Brockhaus, Sep 17 2007

STATUS

approved

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Last modified September 25 17:34 EDT 2017. Contains 292499 sequences.