46630

Appears in sequences

• Integers n such that by inserting between their digits + or - or * or / or ^ or nothing (i.e., concatenate two digits) you recover n back in a nontrivial way.at n=29A157198
• Number of nX6 0..1 arrays with every element equal to 1, 2, 4 or 7 king-move adjacent elements, with upper left element zero.at n=18A298091
• Number of regions in a Y-shaped polygon with equal arms of length n (see the Comments for definition).at n=15A335861