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A268845
Number of sequences with n copies each of 1,2,...,9 and longest increasing subsequence of length 9.
3
1, 6536413529, 8167981106765263789, 5426679072605204732028894233, 2599293828638212400913690945686101111, 1025794060996626005769021866749636185341527229, 358281333933096129012031117609647623312585201668494007
OFFSET
1,2
LINKS
J. D. Horton and A. Kurn, Counting sequences with complete increasing subsequences, Congressus Numerantium, 33 (1981), 75-80. MR 681905
FORMULA
a(n) ~ 9^(9*n + 1/2) / (2*Pi*n)^4. - Vaclav Kotesovec, Mar 03 2016
CROSSREFS
Column k=9 of A047909.
Sequence in context: A258365 A127342 A336681 * A161160 A242829 A233502
KEYWORD
nonn
AUTHOR
Alois P. Heinz, Feb 14 2016
STATUS
approved