195072

Appears in sequences

• Number of self-avoiding closed walks from 0 of area n in strip Z X {-1,0,1}.at n=15A038578
• a(n) = 3*4^n - (n+4)*2^(n-1).at n=8A085354
• a(n) = 6*a(n-1) - 2*a(n-2) for n>1; a(1)=1, a(2)=6.at n=7A154244
• E.g.f. A(x) satisfies A(A(x)) = (1/4)*log(1/(1-4*x)).at n=6A220112
• Numbers that can be expressed as the product of largest odd proper divisor and the sum of odd proper divisors.at n=7A225880
• Number of ternary words of length n avoiding the pattern 11-11.at n=12A241574
• Expansion of x*(1+5*x-2*x^3)/(1-6*x^2+2*x^4).at n=14A249221
• Numbers n for which sigma(sigma(n)) = 3*sigma(n).at n=14A326181
• Primitive terms in A066192: number k such that k is a term of A066192 and k/2 is not.at n=32A383428
• Numbers k such that sigma(k) + phi(k) = psi(k) + k.at n=7A391967