A026331 - OEIS

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A026331

a(n) = T(2n-1,n), where T is the array in A026323.

1, 6, 30, 161, 882, 4916, 27729, 157830, 904706, 5215310, 30203901, 175598997, 1024234850, 5990912280, 35126915550, 206399581434, 1215040298106, 7164651246340, 42310256416456, 250194442456101, 1481274328929984, 8779528511274564

(list; graph; refs; listen; history; text; internal format)

OFFSET

1,2

LINKS

Table of n, a(n) for n=1..22.

CROSSREFS

Sequence in context: A208790 A026112 A038155 * A135490 A376551 A345887

Adjacent sequences: A026328 A026329 A026330 * A026332 A026333 A026334

KEYWORD

nonn

AUTHOR

Clark Kimberling

STATUS

approved