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A047157 T(n,n+2), array T as in A047150. 0
1, 2, 3, 24, 104, 316, 1347, 5007, 19908, 78909, 300750, 1172598, 4544071, 17726423, 69374599, 270603617, 1057755306, 4135771322, 16192627389, 63483189171, 248975461678, 977164006398, 3837265545654, 15078469605272 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

LINKS

Table of n, a(n) for n=0..23.

CROSSREFS

Sequence in context: A157327 A009231 A012304 * A003221 A013312 A013318

Adjacent sequences:  A047154 A047155 A047156 * A047158 A047159 A047160

KEYWORD

nonn

AUTHOR

Clark Kimberling

STATUS

approved

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Last modified May 20 20:16 EDT 2019. Contains 323426 sequences. (Running on oeis4.)