A152393 Column 1 of triangle A152391.

1, 2, 6, 28, 150, 930, 6286, 46120, 359946, 2973650, 25766950, 233274228, 2195351158, 21414166970, 215809803270, 2242074012816, 23959435578514, 262910074728546, 2957549692243558, 34061536200099020, 401102135361004182

Offset

0,2

Links

Table of n, a(n) for n=0..20.

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

Adjacent sequences: A152390 A152391 A152392 * A152394 A152395 A152396

Keyword

nonn

Author

Paul D. Hanna, Dec 11 2008

Status

approved