21917
domain: N
Appears in sequences
- a(n) = floor(n*phi^14), where phi is the golden ratio, A001622.at n=26A004929
- Number of n X n binary arrays with all ones connected only in a 1000-1100-0111-0010 pattern in any orientation.at n=7A147147
- Number of n X n binary arrays symmetric under horizontal and vertical reflection with all ones connected only in a 1000-1100-0111-0010 pattern in any orientation.at n=16A147149
- Number of n X n binary arrays symmetric under horizontal and vertical reflection with all ones connected only in a 1000-1100-0111-0010 pattern in any orientation.at n=17A147149
- 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, 0, 0), (-1, 0, 1), (0, 0, 1), (1, -1, 1), (1, 1, -1)}.at n=9A148491
- Numbers k such that the sum of the prime distinct divisors of k^2+1 equals 2 times the largest prime divisor of k^2+1.at n=5A200072
- Total number of parts of multiplicity 5 in all partitions of n.at n=42A222705
- Number of n X 3 0..1 arrays with rows, columns, diagonals and antidiagonals unimodal.at n=7A223639
- T(n,k)=Number of nXk 0..1 arrays with rows, columns, diagonals and antidiagonals unimodal.at n=47A223644
- Number of n X 3 0..1 arrays with rows and antidiagonals unimodal and columns nondecreasing.at n=30A224141