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A027287 Self-convolution of array T given by A026009. 1
1, 2, 6, 15, 54, 118, 471, 973, 4128, 8262, 36481, 71534, 324876, 627926, 2911923, 5568348, 26241376, 49767432, 237550401, 447567059, 2158650078, 4045351674, 19679880649, 36716551814, 179920446576, 334415846660 (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: A323926 A256982 A047870 * A192186 A243550 A354758

Adjacent sequences:  A027284 A027285 A027286 * A027288 A027289 A027290

KEYWORD

nonn

AUTHOR

Clark Kimberling

STATUS

approved

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Last modified August 15 18:38 EDT 2022. Contains 356148 sequences. (Running on oeis4.)