28474

Appears in sequences

• a(n) = a(n-1)+ceiling(a(n-2)/2) with a(0)=0, a(1)=1.at n=33A064323
• a(n) = a(n-1) + a(n-2) - floor(a(n-2)/2), starting 2,1.at n=32A173497
• Number of binary arrays indicating the locations of trailing edge maxima of a random length-n 0..3 array extended with zeros and convolved with 1,-2,1.at n=18A222148
• Number of (n+2)X(3+2) 0..2 arrays with every consecutive three elements in every row having 2 or 3 distinct values, in every column 1 or 2 distinct values, in every diagonal 2 distinct values, and in every antidiagonal 2 distinct values, and new values 0 upwards introduced in row major order.at n=0A252879
• T(n,k)=Number of (n+2)X(k+2) 0..2 arrays with every consecutive three elements in every row having 2 or 3 distinct values, in every column 1 or 2 distinct values, in every diagonal 2 distinct values, and in every antidiagonal 2 distinct values, and new values 0 upwards introduced in row major order.at n=3A252882
• Number of (1+2)X(n+2) 0..2 arrays with every consecutive three elements in every row having 2 or 3 distinct values, in every column 1 or 2 distinct values, in every diagonal 2 distinct values, and in every antidiagonal 2 distinct values, and new values 0 upwards introduced in row major order.at n=2A252883
• Number of ways to choose a strict partition of each part of a strict composition of n.at n=18A336343
• Number of Dumont permutations of the fourth kind of length 2n avoiding the pattern 312.at n=8A343795
• a(n) = coefficient of x^n in the power series A(x) such that: 1 = Sum_{n=-oo..+oo} n * x^n * (1 - x^n)^n * A(x)^n.at n=7A357158