A269126 - OEIS

%I #6 Mar 02 2016 21:17:20

%S 1,40319,81537026047,360953073372968159,2179159866745975811590271,

%T 15006398706095549205738572240519,

%U 108710813295434106456771753677041770655,798203800902002138190338074022806761037450631,5841526335200139692050292842849347521755651331941759

%N Number of sequences with n copies each of 1,2,...,8 avoiding the pattern 12...8.

%H Alois P. Heinz, <a href="/A269126/b269126.txt">Table of n, a(n) for n = 0..60</a>

%F a(n) = A071550(n) - A268844(n).

%Y Row n=8 of A269129.

%Y Cf. A071550, A268844.

%K nonn

%O 0,2

%A _Alois P. Heinz_, Feb 19 2016