A101476 Sum[k=0..n, Sum[i>=0, C(2n,n-i(k+2))-C(2n,n+i(k+2)+k+1) ]].

1, 3, 14, 64, 287, 1265, 5500, 23660, 100931, 427669, 1802170, 7559473, 31586889, 131548937, 546297862, 2263042926, 9354234285, 38590884287, 158932839678, 653540335951, 2683657672278, 11006131763414, 45086288225520

Offset

0,2

Links

Table of n, a(n) for n=0..22.

Crossrefs

Row sums of triangle A101475.

Sequence in context: A151238 A026243 A058139 * A060801 A292744 A151239

Adjacent sequences: A101473 A101474 A101475 * A101477 A101478 A101479

Keyword

nonn

Author

Ralf Stephan, Jan 21 2005

Status

approved