100955

Appears in sequences

• Consider the 2^n compositions of n and count only those ending in an odd part with row sum A001045.at n=10A123638
• an=n-th smallest integer m=p1*p2*p3, product of 3 odd primes such that d+2m/d are all primes for d dividing 2m.at n=27A128278
• Area A under the trajectory of each odd number in the "3x+1" problem.at n=23A265673