-101
domain: Z
Appears in sequences
- a(n) = a(n-1) - 2*a(n-2) with a(0) = 2, a(1) = 1.at n=17A002249
- Shifts 4 places right under binomial transform.at n=6A010742
- Shifts 4 places left under inverse binomial transform.at n=10A010743
- Column 1 of Inverse partition triangle A038498.at n=53A039800
- Coefficients of the '3rd-order' mock theta function nu(q).at n=33A053254
- Smallest (in magnitude) nonzero number m such that n!+m is prime.at n=62A053714
- a(n) = Sum_{d|2n+1} phi(d)*mu(d).at n=51A054586
- Hankel transform of partition numbers (A000041).at n=57A056223
- Numbers k such that 36*k^2 + 12*k + 5 is prime (sorted by absolute values with negatives before positives).at n=53A056907
- Numbers k such that 36*k^2 + 12*k + 7 is prime (sorted by absolute values with negatives before positives).at n=35A056910
- Expansion of (1-x-x^N)/((1-x)(1-x^2)(1-x^3)...(1-x^N)) for N = 3.at n=36A060022
- a(n+1) = a(n) - a(floor(n/2)), with a(0)=0, a(1)=1.at n=36A062187
- A measure of how close the golden ratio is to rational numbers.at n=42A066212
- Little Hankel transform of A002487.at n=54A070949
- Little Hankel transform of A002487.at n=38A070949
- Little Hankel transform of A002487.at n=68A070949
- Expansion of 1/(1-x+2*x^2+2*x^3).at n=10A077956
- Expansion of 1/(1+x+2*x^2-2*x^3).at n=10A077977
- Constant c(p) used in determining divisibility by the n-th prime, p=A000040(n), for n>=4.at n=64A078606
- First order recursion: a(0) = 1; a(n) = phi(n) - a(n-1) = A000010(n) - a(n-1).at n=32A083239