A047012 T(n,n), array T given by A047010.

1, 1, 3, 9, 31, 111, 403, 1488, 5559, 20932, 79333, 302277, 1156703, 4442257, 17112720, 66096604, 255878503, 992570025, 3857092836, 15012261225, 58512405321, 228352024155, 892205043527, 3489652882944, 13662123455511

Offset

0,3

Links

Table of n, a(n) for n=0..24.

Crossrefs

Sequence in context: A148970 A151459 A151033 * A120305 A049170 A049174

Adjacent sequences: A047009 A047010 A047011 * A047013 A047014 A047015

Keyword

nonn

Author

Clark Kimberling

Status

approved