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A174297 First column of A174295. 6
1, -1, -1, 0, -1, 1, -3, 6, -15, 36, -91, 232, -603, 1585, -4213, 11298, -30537, 83097, -227475, 625992, -1730787, 4805595, -13393689, 37458330, -105089229, 295673994, -834086421, 2358641376, -6684761125, 18985057351, -54022715451 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,7

COMMENTS

First 6 terms as in Mobius function A008683. Signed version of A099323 with an additional leading 1.

LINKS

Table of n, a(n) for n=1..31.

FORMULA

a(n) = -(-3)^(n-3/2)*hypergeom([3/2, n-1],[2],4) for n > 2 (guessed formula) [From Mark van Hoeij, Jul 02 2010]

CROSSREFS

Cf. A112468, A112467, A174294, A174295, A174296, A174297.

Sequence in context: A017924 A052827 A033192 * A005043 A099323 A058534

Adjacent sequences:  A174294 A174295 A174296 * A174298 A174299 A174300

KEYWORD

sign

AUTHOR

Mats Granvik, Mar 15 2010

STATUS

approved

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Last modified October 16 19:22 EDT 2018. Contains 316271 sequences. (Running on oeis4.)