A074272 - OEIS

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A074272

Partial alternating sums of the Kolakoski sequence A000002.

1, -1, 1, 0, 1, -1, 0, -2, 0, -1, 1, -1, 0, -1, 1, 0, 1, -1, 1, 0, 2, 1, 2, 0, 1, -1, 1, 0, 1, -1, 0, -1, 1, 0, 2, 0, 1, -1, 1, 0, 1, -1, 0, -2, 0, -1, 1, 0, 1, -1, 0, -1, 1, -1, 0, -2, 0, -1, 0, -2, -1, -3, -1, -2, 0, -2, -1, -2, 0, -1, 0, -2, -1, -3, -1, -2, 0

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OFFSET

1,8

LINKS

Nathaniel Johnston, Table of n, a(n) for n = 1..10000

EXAMPLE

Kolakoski: 1,2,2,1,1,2,1,2,2,1,2,2,1,1,... We look at 1-2+2-1+1-2+1-2+2 and this gives 1,-1,1,0,1,-1,0,-2,0

CROSSREFS

Cf. A054353.

Sequence in context: A101659 A359823 A373336 * A328372 A341022 A340454

Adjacent sequences: A074269 A074270 A074271 * A074273 A074274 A074275

KEYWORD

sign,easy

AUTHOR

Jon Perry, Sep 21 2002

STATUS

approved