A269117 - OEIS

%I #6 Mar 02 2016 21:09:18

%S 0,0,1,1850672,11690616534627,246211478304046636024,

%T 14919265746950486383601562197,2285085934263252199073238394141449534,

%U 798203800902002138190338074022806761037450631,586566986371155102435901052470650279895779757665905993

%N Number of sequences with 7 copies each of 1,2,...,n avoiding the pattern 12...n.

%H Alois P. Heinz, <a href="/A269117/b269117.txt">Table of n, a(n) for n = 0..80</a>

%F a(n) = A172603(n) - A268850(n).

%Y Column k=7 of A269129.

%Y Cf. A172603, A268850.

%K nonn

%O 0,4

%A _Alois P. Heinz_, Feb 19 2016