104975

Appears in sequences

• Numbers n such that x^n + x^12 + 1 is irreducible over GF(2).at n=15A057482
• Positive numbers which are one less than a perfect square that is also another power.at n=23A062965
• a(n) = (2*n+1)*(n+1)*(2*n^2+3*n-1).at n=12A123197
• a(n) = n^4 - 1.at n=17A123865
• n^4 - 1 divided by its largest fourth power divisor.at n=16A128251
• Clique number of commuting graph of alternating group A_n.at n=32A135909
• Nonsquarefree "year numbers" (numbers n such that phi(n) = 2*phi(sigma(n)): A137815).at n=7A137816
• Numbers m such that abs(K(m+1) - K(m)) = 1, where K(m) = A002034(m) is the Kempner function.at n=41A346211
• Odd numbers that are one less than the square of a perfect power.at n=12A389956