A108888 Mirror image of triangle A108886.

1, 1, 1, 1, 2, 1, 1, 3, 1, 1, 1, 4, 3, 1, 1, 1, 5, 2, 5, 1, 1, 1, 6, 5, 20, 1, 1, 1, 1, 7, 3, 35, 35, 1, 1, 1, 1, 8, 7, 28, 1, 1, 1, 1, 1, 1, 9, 4, 42, 63, 9, 1, 1, 1, 1, 1, 10, 9, 120, 35, 42, 15, 1, 1, 1, 1, 1, 11, 5, 55, 66, 11, 231, 1, 1, 1, 1, 1, 1, 12, 11, 55, 45, 72, 231, 396, 1, 1, 1, 1, 1, 1, 13

Offset

0,5

Links

Table of n, a(n) for n=0..92.

Crossrefs

Sequence in context: A244051 A207974 A239454 * A124021 A109626 A182285

Adjacent sequences: A108885 A108886 A108887 * A108889 A108890 A108891

Keyword

nonn,tabl,frac

Author

N. J. A. Sloane, Jul 16 2005

Status

approved