68719738881
domain: N
Appears in sequences
- a(n) = 1^n + 2^n + 4^n.at n=18A001576
- a(n) = sigma_18(n), the sum of the 18th powers of the divisors of n.at n=3A013966
- Numerator of sum of -18th powers of divisors of n.at n=3A017699
- Cyclotomic polynomials at x=4.at n=27A019322
- 9th cyclotomic polynomial evaluated at powers of 2.at n=6A020517
- Numbers whose cube is palindromic in base 8.at n=20A046239
- A modified Legendre-binomial transform of 4^n for p=3.at n=18A117984
- Numbers whose binary expansion has only the digit "1" as first, central and final digit.at n=18A135576
- a(n) = n^18 + n^9 + 1.at n=4A326618
- Sum of the 9th powers of the square divisors of n.at n=15A351315
- Sum of the 9th powers of the square divisors of n.at n=31A351315
- Sum of the 9th powers of the square divisors of n.at n=47A351315