69161

Appears in sequences

• a(n) = a(n-1) + a(n-1-(number of odd terms so far)).at n=44A007604
• The Gould numbers.at n=9A040027
• Triangle read by rows. The definition is by diagonals. The r-th diagonal from the right, for r >= 0, is given by b(0) = b(1) = 1; b(n+1) = Sum_{k=0..n} binomial(n+2,k+r)*a(k).at n=64A121207
• Triangle read by rows: T(n,k) is the number of set partitions of {1,2,...,n} in which the size of the last block is k, 1<=k<=n; the blocks are ordered with increasing least elements.at n=45A124496
• Triangle read by rows, (1 / ((-1)*A129184 * A007318 + I)) - I, I = Identity matrix.at n=46A160185
• Eigentriangle of the binomial matrix.at n=56A186020
• a(n) = Sum_{k=0..floor(n/3)} binomial(n,3*k)*binomial(4*k,k)/(3*k+1).at n=14A226974