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A047156 T(n,n+1), array T as in A047150. 0
1, 1, 6, 17, 68, 262, 898, 3415, 12665, 48273, 185597, 705894, 2710318, 10414884, 40204048, 155766007, 603806026, 2345327257, 9121945554, 35535598716, 138649731701, 541549508686, 2117490125861, 8287250061067, 32463187726182 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,3

LINKS

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

CROSSREFS

Sequence in context: A006758 A123189 A219847 * A128243 A219294 A154494

Adjacent sequences:  A047153 A047154 A047155 * A047157 A047158 A047159

KEYWORD

nonn

AUTHOR

Clark Kimberling

STATUS

approved

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Last modified May 26 17:49 EDT 2019. Contains 323597 sequences. (Running on oeis4.)