262728

Appears in sequences

• Decimal concatenation of n, n+1, and n+2.at n=26A001703
• Sums of 4 distinct powers of 8.at n=18A038486
• Duplicate of A001703.at n=26A127422
• Inverse Moebius transform of the Mersenne numbers: a(n) = Sum_{d|n} (2^d - 1).at n=17A130887
• Even Padovan numbers divided by 2.at n=23A135619
• a(n) = ceiling(A000931(n)/2).at n=49A173692
• Number of (n+2)X(6+2) 0..3 arrays with every consecutive three elements in every row, column, diagonal and antidiagonal having exactly two distinct values, and new values 0 upwards introduced in row major order.at n=6A253042
• Number of (n+2)X(7+2) 0..3 arrays with every consecutive three elements in every row, column, diagonal and antidiagonal having exactly two distinct values, and new values 0 upwards introduced in row major order.at n=5A253043