139811

Appears in sequences

• Numbers whose set of base-16 digits is {2,3}.at n=31A032816
• Enumeration of partial sums of 1 + [1,2] + [2,3] + [1,2] + [2,3] + ...at n=35A089640
• Base-4 digits are, in order, the first n terms of the sequence (1, 3, 21, 203, 2021, 20203, 202021, 2020203, 20202021, 202020203, ... ).at n=9A102865
• a(0)=0, a(1)=1, a(n) = least k>a(n-1) such that k+a(n-2) is a Jacobsthal number.at n=18A215095
• Number of (n+2) X (2+2) 0..4 arrays with every consecutive three elements in every row and column not having exactly two distinct values, and in every diagonal and antidiagonal having exactly two distinct values, and new values 0 upwards introduced in row major order.at n=13A252805
• Number of (n+3) X (1+3) 0..1 arrays with each row and column divisible by 15, read as a binary number with top and left being the most significant bits.at n=17A262450