29225

Appears in sequences

• Number of fixed points under n-fold inflation for the substitution rule a->abc, b->ab, c->b that underlies the Kolakoski (3,1) sequence.at n=12A080204
• a(n) equals the (n*(n+1)/2)-th partial sum of the self-convolution 4th power of A010054, which has the g.f.: Sum_{k>=0} x^(k*(k+1)/2).at n=17A109415
• Number of meaningful differential operations of the k-th order on the space R^11.at n=12A129638
• a(n) = 5*a(n-1) + 20*a(n-2), n>2 ; a(0)=1, a(1)=1, a(2)=9.at n=6A154996
• Number of 0..n arrays x(0..3) of 4 elements without any two consecutive increases.at n=12A200786
• Triangle lc(n,k): the number of purely line-connected k-partitions of [n], n>=4, 3<=k<n.at n=32A305874
• Number of compositions of n that are not a twin (x,x) but have adjacent equal parts.at n=16A348382
• a(n) is the Wiener index of a broom on 2n vertices of which n+2 are pendant.at n=32A349416