23308

Appears in sequences

• First of triples of consecutive happy numbers, i.e., the first of three consecutive integers each of which is a happy number (A007770).at n=23A072494
• Composite numbers m that divide A123855(m-1) = Sum_{i=1..m-1} Sum_{j=1..m-1} prime(i)^j.at n=23A123857
• Terms of A123857 that are not powers of 2.at n=10A124238
• Numbers k such that |2^k - 57| is prime.at n=42A165778
• Number of nX1 0..2 arrays with the counts of all possible adjacent horizontal and vertical pair sum values being within one of each other.at n=12A203594
• Number of (w,x,y) with all terms in {0,...,n} and w != max(|w-x|, |x-y|).at n=28A213501
• Expansion of Product_{k=1..10} theta_3(q^k), where theta_3() is the Jacobi theta function.at n=43A320242
• Number of length n word structures using an infinite alphabet with all distinct run-lengths and the first run length of a symbol less than that of previous symbols.at n=25A351732