19733
domain: N
Appears in sequences
- CONTINUANT transform of {phi(n)}, 1, 1, 2, 2, 4, 2, .. (A002088).at n=8A038576
- Interprimes which are of the form s*prime, s=7.at n=22A075282
- Trajectory of n under the Reverse and Add! operation carried out in base 3 (presumably) does not reach a palindrome and (presumably) does not join the trajectory of any term m < n.at n=40A077405
- Minimal number (in decimal representation) with n nonprime substrings in base-3 representation (substrings with leading zeros are considered to be nonprime).at n=47A217103
- Sum of positive F-ranks of all compositions of n. Also, sum of positive L-ranks of all compositions of n (see comments lines for definition).at n=13A228820
- Odd composite numbers n, such that n, n+d, n*d and n/d are all odious (A000069) for every divisor d of n.at n=31A231558
- Smallest k such that A285481(k) >= n, i.e., lowest d where the smallest integer radius needed for a d-dimensional ball to have a volume >= 1 is at least n.at n=34A285482
- Number of excursions of length n with Motzkin-steps avoiding the consecutive steps UD, HU and DH.at n=21A329695