39399

Appears in sequences

• Numbers k such that 129*2^k+1 is prime.at n=18A032414
• The array in A059219 read by antidiagonals in 'up' direction.at n=52A059220
• The array in A059219 read by antidiagonals in the direction in which it was constructed.at n=52A059235
• Numbers such that harmonic mean of digits is 5.at n=23A062183
• Number of compositions (ordered partitions) of n into powers of 3.at n=28A078932
• Satisfies A(x) = 1 + x*A(x)*f(x)^2, where f(x) = Sum_{k>=0} x^((3^n-1)/2) and f(x)^2 = 2 - f(x^2) + 2*Sum_{n>0} x^A023745(n).at n=14A087218
• a(n) = number of n-lettered words in the alphabet {1, 2, 3} with as many occurrences of the substring (consecutive subword) [1, 2, 3] as of [2, 3, 1].at n=10A211301
• Number of (w,x,y,z) with all terms in {1,...,n} and w <= harmonic mean of {x,y,z}.at n=18A212104
• Numbers with digits 3 and 9 only.at n=41A284964