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A026971 a(n) = self-convolution of array T given by A026648. 0
1, 2, 11, 34, 138, 492, 2342, 8500, 39814, 148124, 709266, 2665932, 12824196, 48623448, 235400988, 897705096, 4362689862, 16713200556, 81488683874, 313281535180, 1531312911148, 5903966489576, 28918583700468, 111757786454424, 548352142452124, 2123323536391448 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

LINKS

Table of n, a(n) for n=0..25.

CROSSREFS

Sequence in context: A209033 A222650 A026961 * A323683 A071801 A026981

Adjacent sequences:  A026968 A026969 A026970 * A026972 A026973 A026974

KEYWORD

nonn

AUTHOR

Clark Kimberling

EXTENSIONS

More terms from Sean A. Irvine, Oct 20 2019

STATUS

approved

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Last modified September 22 16:44 EDT 2020. Contains 337291 sequences. (Running on oeis4.)