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A144167
IntegerPart(PolyGamma(n,1)).
1
1, -2, 6, -24, 122, -726, 5060, -40400, 363240, -3630593, 39926622, -479060379, 6227402193, -87180957830, 1307694352218, -20922949679481, 355688785859223, -6402385922818921, 121645216453639396, -2432903168507861321
OFFSET
1,2
COMMENTS
Also equals (-1)^(n+1)*floor(n!*zeta(n+1)). [Jean-François Alcover, Feb 28 2013]
MATHEMATICA
lst={}; Do[AppendTo[lst, IntegerPart[PolyGamma[n, 1]]], {n, 4^3}]; lst
CROSSREFS
Sequence in context: A349089 A352429 A352437 * A104983 A375458 A144251
KEYWORD
sign
AUTHOR
STATUS
approved