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A152543 Column 1 of triangle A152541. 3
2, 6, 54, 818, 17360, 472484, 15666720, 612024124, 27510397296, 1398077638344, 79244353102992, 4955659123743056, 338912510632397056, 25160982724710053792, 2015185871050013302272, 173192799533042315725008 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,1

LINKS

Table of n, a(n) for n=0..15.

CROSSREFS

Cf. A152541, A152542, A152544.

Sequence in context: A280982 A219692 A085078 * A279454 A306021 A122593

Adjacent sequences:  A152540 A152541 A152542 * A152544 A152545 A152546

KEYWORD

nonn

AUTHOR

Paul D. Hanna, Dec 12 2008

STATUS

approved

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Last modified April 11 06:11 EDT 2021. Contains 342886 sequences. (Running on oeis4.)