42026

Appears in sequences

• Numbers n^2+1 such that (n-1)^2+1 and (n+1)^2+1 are prime.at n=6A217583
• G.f. satisfies: A(x) = A(x^2 + 2*x^3)/(1-x).at n=17A251581
• Values of n such that A080221(n)=6; i.e., values of n such that n is divisible by the sum of digits of n when expressed in exactly 6 of the bases b=1...n.at n=33A271311
• G.f. A(x) satisfies Sum_{n=-oo..+oo} (x^n - A(x))^n = Sum_{n>=0} x^(n^2).at n=17A370031