53847

Appears in sequences

• Numbers k such that phi(k) is equal to A008473(k+1).at n=11A039781
• Numbers k such that the smoothly undulating palindromic number (72*10^k - 27)/99 is a prime.at n=9A062221
• Number of (n+1)X(2+1) 0..2 arrays with nondecreasing x(i,j)+x(i,j-1) in the i direction and nondecreasing min(x(i,j),x(i-1,j)) in the j direction.at n=5A250626
• T(n,k)=Number of (n+1)X(k+1) 0..2 arrays with nondecreasing x(i,j)+x(i,j-1) in the i direction and nondecreasing min(x(i,j),x(i-1,j)) in the j direction.at n=26A250632
• Number of (6+1)X(n+1) 0..2 arrays with nondecreasing x(i,j)+x(i,j-1) in the i direction and nondecreasing min(x(i,j),x(i-1,j)) in the j direction.at n=1A250638
• Number of sortable normal multiset partitions of weight n.at n=9A326212
• Number of binary necklaces with n beads and at least four consecutive black beads.at n=20A351361