A024746 Binomial coefficients: C(n,k), 2 <= k <= n-2, sorted.

6, 10, 10, 15, 15, 20, 21, 21, 28, 28, 35, 35, 36, 36, 45, 45, 55, 55, 56, 56, 66, 66, 70, 78, 78, 84, 84, 91, 91, 105, 105, 120, 120, 120, 120, 126, 126, 136, 136, 153, 153, 165, 165, 171, 171, 190, 190, 210, 210, 210, 210, 220, 220, 231, 231, 252, 253, 253, 276, 276, 286

Offset

1,1

Links

Table of n, a(n) for n=1..61.

Formula

Sum_{n=1}^{infinity} 1/a(n) = 3/2. - Franklin T. Adams-Watters, Feb 28 2006

Crossrefs

Cf. A006987.

Sequence in context: A003862 A127019 A175612 * A111093 A144394 A250742

Adjacent sequences: A024743 A024744 A024745 * A024747 A024748 A024749

Keyword

nonn

Author

David W. Wilson

Status

approved