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A027171 a(n) = A027170(2n, n). 0
1, 10, 42, 156, 570, 2096, 7784, 29168, 110106, 418128, 1595616, 6113740, 23505352, 90633796, 350351636, 1357278296, 5268292826, 20483876816, 79765662896, 311038321436, 1214362277696, 4746455801876, 18570960418916 (list; graph; refs; listen; history; text; internal format)
OFFSET
0,2
LINKS
CROSSREFS
Sequence in context: A108678 A226988 A358249 * A003822 A087120 A222358
KEYWORD
nonn
AUTHOR
STATUS
approved

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Last modified July 19 13:29 EDT 2024. Contains 374394 sequences. (Running on oeis4.)