A152393 - OEIS

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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

(list; graph; refs; listen; history; text; internal format)

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