98175

Appears in sequences

• a(n) = (n-1)*(2*n-1)*(3*n-1).at n=26A033594
• Number of independent components for a Weyl tensor in n dimensions.at n=30A052472
• Number of primitive (period n) periodic palindromic structures using a maximum of two different symbols.at n=34A056513
• Number of primitive (period n) periodic palindromic structures using exactly two different symbols.at n=33A056518
• Numbers k such that both k and k+1 are abundant.at n=26A096399
• Indices of highly composite triangular numbers.at n=27A101755
• Numbers k such that both sigma(k) >= 2*k-1 and sigma(k+1) >= 2*(k+1)-1.at n=28A103289
• First occurrence of n in A225399, or -1 if n does not appear in A225399.at n=42A225400
• a(n) is the smallest odd k > 1 such that k is a Niven number at least in all the bases from 1 to n.at n=7A226319
• a(n) = floor(1/(zeta(5) - Sum_{h=1..n} 1/h^5)).at n=11A248234
• Numbers k such that both k and k+1 are Zumkeller numbers (A083207).at n=24A328327
• Numbers m such that r(m) > r(k) for all k < m, where r(m) = min(sigma(m)/m, sigma(m+1)/(m+1)), and sigma(m) is the sum of divisors of m (A000203).at n=12A333054
• Smallest k such that A349949(k) = n, or -1 if no such k exists.at n=11A350654
• a(n) is the least number k such that A246600(k) = n, and -1 if no such k exists.at n=27A359081
• Indices of records in A246600.at n=8A359082
• Index of the first occurrence of n in A076982.at n=43A368855
• a(n) is the least number k that has exactly n divisors <= sqrt(k) of the form 4*j+3.at n=14A379683
• Numbers k such that each of k and k+1 is either a practical number (A005153) or an almost practical number (A174533).at n=17A387654