33132

Appears in sequences

• a(n) is the concatenation of n and 4n.at n=32A019552
• Numbers n for which there are exactly twelve k such that n = k + reverse(k).at n=27A072435
• Number of regions in an equal-armed cross with arms of length n (see Comments for definition).at n=7A331456
• G.f. A(x) satisfies A(x) = ( 1 + 9*x*A(x)/(1 - x*A(x)) )^(1/3).at n=10A372019
• Integers k such that there are i groups of order k+i up to isomorphism, for i=1,2,3.at n=21A373649