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A112000
One half of third column (k=2) of triangle A111999.
1
-3, 65, -1190, 22050, -433125, 9144135, -208107900, 5099994900, -134219460375, 3781060408125, -113633468798850, 3631422078033750, -123022987568105625, 4405418319999571875, -166312279434175875000, 6602853358582065585000, -275059081486584416896875
OFFSET
0,1
FORMULA
a(n)=A111999(n+3, 2)/2, n>=0.
Conjecture: +n*(4*n+5)*a(n) +(2*n+3)*(n+2)*(4*n+9)*a(n-1)=0. - R. J. Mathar, Jul 09 2017
CROSSREFS
Cf. Second (k=1) column: A000906(n+2)*(-1)^n = 2*A000457(n+2)*(-1)^n, n>=0.
Sequence in context: A196586 A197043 A188984 * A216859 A346162 A012804
KEYWORD
sign,easy
AUTHOR
Wolfdieter Lang, Sep 12 2005
STATUS
approved