117672

Appears in sequences

• Number of one-element transitions between all set partitions of n labeled elements.at n=8A094251
• Row sums of number triangle A185962.at n=29A185963
• Number of 2 X 2 matrices having entries in {0,1,...,n} and determinant in the closed interval [-n,n] with no entry repeated.at n=34A279063
• a(n) = 3*a(n-1) - 2*a(n-2) - a(n-3), with a(0)=1, a(1)=3 and a(2)=7.at n=20A368205