47444

Appears in sequences

• a(n) is least k such that k and 8k are anagrams in base n (written in base 10).at n=21A023100
• Expansion of x*(1-x)/((1-2*x)*(1+3*x)).at n=11A091004
• a(n) = a(n-1) + 6*a(n-2) for n >= 2, a(0)=1, a(1)=2.at n=10A133467
• Numbers k that divide the sum of digits of 13^k.at n=57A175525
• Number of size collections in prime "Mrs. Perkins's Quilt" dissections of integer-sided squares into n squares.at n=17A232484
• a(n) is the number of primes occurring between A053182(n) and A053183(n) (excluding the endpoints).at n=17A238399
• One third of the number of edges in the metrically regular triangulation of the n-th approximation of the Koch snowflake fractal.at n=5A282563
• Numbers with digits 4 and 7 only.at n=38A284971
• Lexicographically first sequence of distinct terms such that the sum of any two terms is not a term of the sequence, and the sum of any two digits is not a digit of the sequence.at n=40A302938