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Search: id:A092883
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A092883 Number of ordered 5-multiantichains on an n-set. +0
3
1, 2, 34, 578, 17986, 914402, 58418434, 3647772578, 201049121986, 9759193797602, 427502097160834, 17322219545580578, 662151305878673986, 24232906768942216802, 858385300154461279234, 29668082426391129084578 (list; graph; listen)
OFFSET

0,2
FORMULA

a(n) = 32^n-20*24^n+60*20^n+20*18^n+10*17^n-100*16^n-120*15^n+150*14^n+120*13^n-360*12^n+20*11^n+480*10^n+80*9^n-360*8^n+120*7^n-720*6^n+720*5^n+250*4^n-500*3^n+150*2^n.

CROSSREFS

Cf. A092880-A092882, A092884.

Sequence in context: A098704 A119298 A045585 this_sequence A134495 A165938 A002782

Adjacent sequences: A092880 A092881 A092882 this_sequence A092884 A092885 A092886

KEYWORD

nonn

AUTHOR

Goran Kilibarda, Vladeta Jovovic (vladeta(AT)eunet.rs), Mar 10 2004

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Last modified November 30 13:13 EST 2009. Contains 167758 sequences.

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