22000

Appears in sequences

• Cubes written in base 3.at n=5A004633
• Number of paraffins.at n=18A006009
• a(n) is the least k > 0 such that k and 3k are anagrams in base n (written in base 10).at n=17A023095
• Expansion of (1-25*x)^(-6/5).at n=3A049394
• Multiples of 4 whose digits add to 4.at n=22A063997
• A064637 converted to factorial base.at n=16A064477
• Full Łukasiewicz word for each rooted plane tree (interpretation e in Stanley's exercise 19) encoded by A014486 (or A063171).at n=16A079436
• Triangular matrix, read by rows, equal to [2*I - A008459]^(-1), i.e., the matrix inverse of the difference of twice the identity matrix and the triangular matrix of squared binomial coefficients.at n=24A102220
• Euler's totient function applied to tribonacci numbers.at n=19A107647
• Product of n^2 and n-th tetrahedral number: a(n) = n^3*(n+1)*(n+2)/6.at n=10A119771
• 3-smooth numbers in ternary representation.at n=25A131096
• Numbers k such that k and k^2 use only the digits 0, 2, 3, 4 and 8.at n=28A136885
• Numbers k such that k and k^2 use only the digits 0, 2, 4, 5 and 8.at n=46A136900
• Numbers k such that k and k^2 use only the digits 0, 2, 4, 6 and 8.at n=33A136904
• Numbers k such that k and k^2 use only the digits 0, 2, 4, 7 and 8.at n=36A136906
• Numbers k such that k and k^2 use only the digits 0, 2, 4 and 8.at n=19A136908
• Numbers k such that k and k^2 use only the digits 0, 2, 4, 8 and 9.at n=30A136909
• Sequence representing valid nontrivial 1-dimensional Hashi (a.k.a. Bridges or Hashiwokakero) puzzle orientations.at n=38A143964
• 4 times 9-gonal numbers: a(n) = 2*n*(7*n-5).at n=40A152760
• Triangle read by rows: T(n,k) is the number of permutations of n elements with transposition distance equal to k, n >= 1 and 0 <= k <= A065603(n).at n=28A164366