cp's OEIS Frontend

A238871 Number of weakly unimodal compositions of n with absolute difference of successive parts <= 1.

%I A238871 #10 Mar 22 2014 12:09:33
%S A238871 1,1,2,4,6,10,14,21,27,40,52,70,92,124,156,206,264,335,425,539,673,
%T A238871 847,1052,1300,1611,1990,2433,2977,3638,4420,5367,6496,7829,9439,
%U A238871 11341,13590,16270,19425,23135,27525,32697,38745,45844,54168,63875,75247,88493,103892
%N A238871 Number of weakly unimodal compositions of n with absolute difference of successive parts <= 1.
%H A238871 Alois P. Heinz, <a href="/A238871/b238871.txt">Table of n, a(n) for n = 0..1000</a>
%e A238871 The a(8) = 27 such compositions are:
%e A238871 01:  [ 1 1 1 1 1 1 1 1 ]
%e A238871 02:  [ 1 1 1 1 1 1 2 ]
%e A238871 03:  [ 1 1 1 1 1 2 1 ]
%e A238871 04:  [ 1 1 1 1 2 1 1 ]
%e A238871 05:  [ 1 1 1 1 2 2 ]
%e A238871 06:  [ 1 1 1 2 1 1 1 ]
%e A238871 07:  [ 1 1 1 2 2 1 ]
%e A238871 08:  [ 1 1 1 2 3 ]
%e A238871 09:  [ 1 1 2 1 1 1 1 ]
%e A238871 10:  [ 1 1 2 2 1 1 ]
%e A238871 11:  [ 1 1 2 2 2 ]
%e A238871 12:  [ 1 2 1 1 1 1 1 ]
%e A238871 13:  [ 1 2 2 1 1 1 ]
%e A238871 14:  [ 1 2 2 2 1 ]
%e A238871 15:  [ 1 2 2 3 ]
%e A238871 16:  [ 1 2 3 2 ]
%e A238871 17:  [ 2 1 1 1 1 1 1 ]
%e A238871 18:  [ 2 2 1 1 1 1 ]
%e A238871 19:  [ 2 2 2 1 1 ]
%e A238871 20:  [ 2 2 2 2 ]
%e A238871 21:  [ 2 3 2 1 ]
%e A238871 22:  [ 2 3 3 ]
%e A238871 23:  [ 3 2 1 1 1 ]
%e A238871 24:  [ 3 2 2 1 ]
%e A238871 25:  [ 3 3 2 ]
%e A238871 26:  [ 4 4 ]
%e A238871 27:  [ 8 ]
%Y A238871 Cf. A001522, A001523, A005169, A034297, A238870, A238872.
%K A238871 nonn
%O A238871 0,3
%A A238871 _Joerg Arndt_, Mar 21 2014