-78
domain: Z
Appears in sequences
- Expansion of Product_{k >= 1} (1 - x^k)^6.at n=22A000729
- Generalized sum of divisors function: excess of sum of odd divisors of n over sum of even divisors of n.at n=39A002129
- The sequence 2^(1-n)*a(n) is fixed (up to signs) by Stirling2 transform.at n=5A003633
- Percolation series for f.c.c. lattice.at n=6A006806
- Magnetization for hexagonal lattice.at n=7A007207
- Unique attractor for (RIGHT then MOBIUS) transform.at n=45A007554
- Incomplete Gamma Function at -3.at n=5A010843
- Stirling numbers of first kind S1(13,n).at n=11A011523
- Zeroth row of infinite Latin square heading to -oo.at n=33A019585
- Dirichlet inverse of Euler totient function (A000010).at n=78A023900
- Expansion of q^(-1/2) * (eta(q) * eta(q^3))^3 in powers of q.at n=28A030208
- Expansion of q^(-1/2) * (eta(q) * eta(q^3))^3 in powers of q.at n=55A030208
- Expansion of (eta(q) * eta(q^5))^4 in powers of q.at n=22A030210
- Shifts left under Euler transform.at n=14A038072
- Column 2 of Inverse partition triangle A038498.at n=55A039801
- Sum_{d=1..n} phi(d)*mu(d).at n=37A054585
- Expansion of square of continued fraction 1/ ( 1+q/ ( 1+q^2/ ( 1+q^3/ ( 1+q^4/... )))).at n=28A055101
- a(n) = n^2 - previousprime(n)*nextprime(n), for n>2.at n=40A056140
- a(n) = primefloor(n)*primeceiling(n) - previousprime(n)*nextprime(n).at n=40A056141
- Image of primes (A000040) under "little Hankel" transform that sends [c_0, c_1, ...] to [d_0, d_1, ...] where d_n = c_n^2 - c_{n+1}*c_{n-1}.at n=12A056221