37960

Appears in sequences

• a(n) = 2*(n-1)*(n^2 + 1).at n=26A071233
• a(n) is the first term in the first chain of at least n consecutive numbers each having exactly four distinct prime factors.at n=2A087977
• Number of base 10 circular n-digit numbers with adjacent digits differing by 5 or less.at n=5A125373
• Partial sums of round(3^n/7).at n=11A178703
• Initial term of first run of exactly n consecutive numbers with 4 distinct prime factors.at n=2A185042
• Number of unlabeled rooted trees with n nodes and maximal outdegree (branching factor) 3.at n=11A244399
• Numbers k such that R_(k+2) + 10^k is prime, where R_k = 11...1 is the repunit (A002275) of length k.at n=3A256925
• a(n) = Sum_{d|n} d^2 * (d+1)/2.at n=39A278403
• Smallest k such that the k-th tetrahedral number is divisible by exactly n tetrahedral numbers.at n=39A342808
• Numbers that are palindromes in both ternary and balanced ternary representations with representations that are different.at n=12A354886
• a(n) is the index of the smallest tetrahedral number with exactly n distinct prime factors.at n=11A359089
• Numbers k such that k, k+1 and k+2 have exactly 4 distinct prime factors.at n=0A364309
• Square array T(n, k), n > 1 and k >= 1, read by upward antidiagonals, give the smallest number that starts a sequence of exactly k consecutive numbers, each having exactly n distinct prime factors (counted without multiplicity), or -1 if no such number exists.at n=12A375287