A145221 Duplicate of A000387.

0, 0, 1, 0, 6, 20, 135, 924, 7420, 66744, 667485, 7342280, 88107426, 1145396460, 16035550531, 240533257860, 3848532125880, 65425046139824, 1177650830516985, 22375365779822544, 447507315596451070, 9397653627525472260, 206748379805560389951, 4755212735527888968620

Offset

0,5

Links

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

Crossrefs

Sequence in context: A114959 A000386 A000387 * A332391 A027148 A095854

Adjacent sequences: A145218 A145219 A145220 * A145222 A145223 A145224

Keyword

dead

Status

approved