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A054146 One-half of A054145. 2
0, 1, 6, 29, 128, 536, 2168, 8556, 33152, 126640, 478304, 1789840, 6646272, 24519680, 89956224, 328437184, 1194102784, 4325299456, 15615510016, 56209986816, 201798074368, 722731821056, 2582790830080, 9211619462144 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,3

LINKS

Table of n, a(n) for n=0..23.

CROSSREFS

Sequence in context: A111644 A225618 A081278 * A172062 A081674 A173413

Adjacent sequences:  A054143 A054144 A054145 * A054147 A054148 A054149

KEYWORD

nonn

AUTHOR

Clark Kimberling, Mar 18 2000

STATUS

approved

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Last modified November 17 12:09 EST 2018. Contains 317276 sequences. (Running on oeis4.)