31682

Appears in sequences

• Expansion of (1-x-x^2+2*x^3) / ((1-x)*(1+x)*(1-3*x+x^2)).at n=11A038990
• a(n) = F(n)^2 + F(n+1)^2 + F(n+2)^2, where F(n) denotes the n-th Fibonacci number.at n=10A127546
• Numbers n such that n = x + y, sigma_1(n) = sigma_1(x) + sigma_1(y) and sigma_2(n) = sigma_2(x) + sigma_2(y).at n=20A219033
• Sum of the asymmetry degrees of all compositions of n with parts in {1,2,4,6,8,10,...}.at n=17A276054
• Squarefree integers m > 1 such that if prime p divides m, then s_p(m) >= p and s_p(m) == 2 (mod p-1), where s_p(m) is the sum of the base p digits of m.at n=11A324404
• a(n) = A000045(n)*A000045(n+1) mod A000032(n).at n=22A357553
• Numbers k such that k + A067666(k) is a square.at n=35A386257