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A011809
M-sequences from multicomplexes on at most 12 variables with no monomial of degree more than n-1.
5
2, 14, 378, 30772, 6807620, 3763991016, 4811471951354, 13277799809473332, 74561538032148504662, 809821626491578170933334, 16284904611381210096496935806, 583857656205952477141180365415562
OFFSET
0,1
REFERENCES
S. Linusson, The number of M-sequences and f-vectors, Combinatorica, 19 (1999), 255-266.
FORMULA
a(n) = Sum_{k=-1..n} L(12, n, k) where L(p, n, k) = Sum_{i=k..n} L(p-1, n, i) * L(p, i-1, k-1) with boundary conditions L(p, n, n) = L(p, n, -1) = 1 (p >= 0, n >= -1), L(0, n, k) = 0 (0 <= k < n) [from Linusson]. - Sean A. Irvine, Jun 28 2018
KEYWORD
nonn
AUTHOR
Svante Linusson (linusson(AT)math.kth.se)
EXTENSIONS
Offset corrected by Sean A. Irvine, Jun 28 2018
STATUS
approved