157194
domain: N
Appears in sequences
- Number of different shapes formed by bending a piece of wire of length n in the plane.at n=23A066372
- a(n) = 6*a(n-1) + 3*a(n-2), a(0)=2, a(1)=14.at n=6A109113
- Number of arrays of length 5 that are sums of n consecutive elements of length 5+n-1 permutations of 0..5+n-2, and no two consecutive rises or falls in the latter permutation.at n=6A229721