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A145221 Duplicate of A000387. 4
0, 0, 1, 0, 6, 20, 135, 924, 7420, 66744, 667485, 7342280, 88107426, 1145396460, 16035550531, 240533257860, 3848532125880, 65425046139824, 1177650830516985, 22375365779822544, 447507315596451070, 9397653627525472260, 206748379805560389951, 4755212735527888968620 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,5

LINKS

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

CROSSREFS

Sequence in context: A114959 A000386 A000387 * A027148 A095854 A027268

Adjacent sequences:  A145218 A145219 A145220 * A145222 A145223 A145224

KEYWORD

dead

STATUS

approved

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Last modified June 20 17:51 EDT 2019. Contains 324234 sequences. (Running on oeis4.)