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A152393
Column 1 of triangle A152391.
4
1, 2, 6, 28, 150, 930, 6286, 46120, 359946, 2973650, 25766950, 233274228, 2195351158, 21414166970, 215809803270, 2242074012816, 23959435578514, 262910074728546, 2957549692243558, 34061536200099020, 401102135361004182
OFFSET
0,2
FORMULA
a(n) is divisible by (n+1) for n>=0.
EXAMPLE
a(n)/(n+1) = [1,1,2,7,30,155,898,5765,39994,297365,2342450,...].
CROSSREFS
Cf. A152391; columns: A152392, A152394; A152395.
Sequence in context: A218941 A303829 A272820 * A305199 A295792 A004984
KEYWORD
nonn
AUTHOR
Paul D. Hanna, Dec 11 2008
STATUS
approved