31648

Appears in sequences

• Representation degeneracies for boson strings.at n=33A005294
• a(0) = a(1) = 1; a(n+2) = 2*a(n+1) + 2*a(n).at n=11A026150
• Iccanobirt prime indices (13 of 15): Indices of prime numbers in A102123.at n=15A102143
• Number of partitions of 2n in which odd parts and multiples of 3 and 5 occur with even multiplicities. There is no restriction on the other even parts.at n=29A102346
• Sylvester cyclotomic numbers for A002605.at n=21A105607
• Generalized NSW numbers.at n=5A107903
• Row sums of triangle A120894 (cascadence of 1+x+x^2).at n=9A120897
• Sequence arising from the factorization of F(n)=A002605 and L(n)=A080040 F(0)=0, F(1)=1, F(n)=2*F(n-1)+2*F(n-2), L(0)=2, L(1)=2, L(n)=2*L(n-1)+2*L(n-2).at n=10A127259
• (k^2)-th k-smooth number for k = prime(n).at n=23A133581
• Expansion of g.f.: x^2*(1 + x - x^2)/(1 - 2*x^2 - 2*x^4).at n=23A160444
• Elements of A160444, pairs of consecutive entries swapped.at n=22A160572
• T(n,k)=Number of (n+1)X(k+1) binary arrays with every 2X2 subblock singular.at n=36A184686
• Number of nX3 0,1 arrays with the row and column sums nondecreasing.at n=7A202555
• T(n,k)=Number of nXk 0,1 arrays with the row and column sums nondecreasing.at n=47A202560
• T(n,k)=Number of nXk 0,1 arrays with the row and column sums nondecreasing.at n=52A202560
• Practical numbers q with q + 2 and q^2 + 2 both practical.at n=17A294225
• Nonunitary weird numbers: numbers that are nonunitary abundant but not nonunitary pseudoperfect.at n=5A327948
• a(n) = A007678(2*n)/(2*n).at n=46A341734
• Dirichlet convolution of A011782 (2^(n-1)) with A349451 (Dirichlet inverse of Fibonacci numbers).at n=15A349566