69894

Appears in sequences

• Numbers k such that the decimal digits of k*(k+1) are a permutation of those of k*(k-1).at n=24A181775
• Square array A(1,k) = A265905(k), A(n>1,k) = A(n-1, k+1) - A(n-1, k); successive differences of A265905 read by descending antidiagonals as A(1,1), A(1,2), A(2,1), A(1,3), A(2,2), A(3,1), ...at n=34A275950
• Transpose of array A275950.at n=29A275951