795691

Appears in sequences

• a(n) = (9n^4 - 18n^3 + 18n^2 - 9n + 2)/2.at n=20A079903
• Numerator of (9*(n^4 - 2*n^3 + 2*n^2 - n) + 2)/(2*(2*n-1)).at n=20A096430
• Numbers n such that phi(n) = 4*phi(n-1).at n=11A268126
• Terms of A324315 (squarefree integers m > 1 such that if prime p divides m, then the sum of the base p digits of m is at least p) that are also hexagonal numbers (A000384) with index equal to their largest prime factor.at n=28A324319
• a(n) = (m(n)^2 + 3)*(m(n)^2 + 7)/32, where m(n) = 2*n - 1.at n=35A336535
• Each term of A003215 (centered hexagonal numbers) is multiplied by the corresponding term of A003154 (centered dodecagonal numbers).at n=14A338795