63495

Appears in sequences

• a(n) = (8*n+1)*(8*n+7).at n=31A001533
• (n^4 - 10*n^2 + 15*n - 6)/2.at n=18A135916
• a(n) = 81*n^2 - 9.at n=27A157909
• Expansion of Product_{k>=1} (1 + x^(k*(k+1)/2))^(k*(k+1)/2).at n=46A298850
• Odd composites for which gcd(A325977(n), A325978(n)) is equal to abs(A325977(n)).at n=14A325981
• Least integer k in A031443 such that k*n is also in A031443, or -1 if there is no such k.at n=33A358857