A027101 a(n) = diagonal sum of right justified array T given by A027082.

1, 1, 3, 9, 18, 49, 127, 331, 883, 2376, 6439, 17591, 48347, 133589, 370883, 1033997, 2893498, 8124303, 22880569, 64616728, 182943204, 519146325, 1476337528, 4206621803, 12008000771, 34335363519, 98332343337, 282026580873

Offset

0,3

Links

Table of n, a(n) for n=0..27.

Crossrefs

Sequence in context: A015635 A062882 A363534 * A015656 A188797 A056372

Adjacent sequences: A027098 A027099 A027100 * A027102 A027103 A027104

Keyword

nonn

Author

Clark Kimberling

Status

approved