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A144896
Third column of triangle A134134 (S2'(2)= S1hat(2)).
1
1, 2, 10, 44, 228, 1272, 8760, 63936, 547776, 5145984, 54233280, 624291840, 7879472640, 107423677440, 1579212910080, 24832164556800, 416273901926400, 7403098797158400, 139238590721126400, 2760253302701260800, 57522218527420416000, 1256931901812400128000
OFFSET
0,2
FORMULA
a(n) = A134134(n+3,3), n>=0.
CROSSREFS
Cf. A134134, A000142 (factorials, first column). A144895 (second column).
Sequence in context: A084609 A105485 A151313 * A359526 A142983 A227852
KEYWORD
nonn,easy
AUTHOR
Wolfdieter Lang, Oct 09 2008
STATUS
approved