32841
domain: N
Appears in sequences
- Sums of distinct powers of 8.at n=39A033045
- Restricted permutations.at n=19A036999
- Positive numbers having the same set of digits in base 2 and base 8.at n=34A037413
- Sums of 4 distinct powers of 8.at n=5A038486
- Numbers having four 1's in base 8.at n=35A043428
- a(n) = a(1) + a(2) + ... + a(n-1) - a(m) for n >= 4, where m = 2^(p+1) + 2 - n and p is the unique integer such that 2^p < n - 1 <= 2^(p+1), starting with a(1) = 1, a(2) = 2, and a(3) = 4.at n=16A049913
- a(n) is the (n+1)st (n+2)-gonal number.at n=40A064808
- Numbers k such that (1!)^2 + (2!)^2 + (3!)^2 + ... + (k!)^2 is prime.at n=18A100289
- Number of n X n binary arrays symmetric under 180 degree rotation with all ones connected only either three adjacent vertically or three adjacent horizontally.at n=8A145764
- Left edge of the triangle A045975.at n=40A204556
- Smallest positive multiple of n whose base 8 representation contains only 0's and 1's.at n=40A244959
- a(n) = Sum_{d|n} 8^(d-1).at n=5A339688