22357

Appears in sequences

• Number of partitions of n-th triangular number n(n+1)/2 (A000217(n)) into triangular parts.at n=15A072964
• Trisection of A007294.at n=40A073470
• Partial sums of A004676.at n=7A121807
• As a vector, shifts to the left when multiplied by A054521.at n=34A147524
• Number of walks within N^3 (the first octant of Z^3) starting at (0,0,0) and consisting of n steps taken from {(-1, -1, 0), (-1, -1, 1), (-1, 1, -1), (0, 0, -1), (1, 0, 1)}.at n=10A148546
• Numbers n with property that n^2 starts and ends with 49.at n=14A159815
• Coefficient of x in the reduction by x^2->x+1 of the polynomial p(n,x) defined at Comments.at n=13A193007
• Number of (w,x,y,z) with all terms in {0,...,n} and 2w=max{w,x,y,z}-min{w,x,y,z}.at n=36A212757
• Partial sums of the number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 499", based on the 5-celled von Neumann neighborhood.at n=30A272562
• Sum of the squarefree parts of the partitions of n into 5 parts.at n=38A309480
• Regular triangle read by rows, T(n,k) is the number of derangements of [n] with exactly k right-to-left minima, for n >= 2 and 1 <= k <= n-1.at n=31A344437