A011806 M-sequences from multicomplexes on at most 9 variables with no monomial of degree more than n-1.

2, 11, 176, 6743, 562727, 95264798, 30636553704, 17675571563918, 17429225215357484, 28199043639169683222, 72319533139138698523941, 285428460453153302654918919, 1689512010464368927544841098844

Offset

0,1

References

S. Linusson, The number of M-sequences and f-vectors, Combinatorica, 19 (1999), 255-266.

Links

Table of n, a(n) for n=0..12.

Formula

a(n) = Sum_{k=-1..n} L(9, 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

Crossrefs

Cf. A007065, A007625, A011804, A011805, A011807, A011808, A011809.

Sequence in context: A049531 A031508 A202140 * A012953 A012974 A011839

Adjacent sequences: A011803 A011804 A011805 * A011807 A011808 A011809

Keyword

nonn

Author

Svante Linusson (linusson(AT)math.kth.se)

Extensions

Offset corrected by Sean A. Irvine, Jun 28 2018

Status

approved