89376

Appears in sequences

• 4-dimensional centered tetrahedral numbers.at n=25A008498
• Automorphic numbers: numbers k such that k^6 ends with k. Also m-morphic numbers for all m not congruent to 26 (mod 50) but congruent to 6 (mod 10).at n=40A068408
• a(n) = 4n^3 + 2n^2.at n=27A089207
• Triangle of a(n,m) = number of m-member minimal T_0-covers of an n-set (n >= 0, 0<= m <=n).at n=42A094544
• Numbers of planar triangulations with minimum degree 5 and without separating 3-cycles - that is 3-cycles where the interior and exterior contain at least one vertex.at n=14A111357
• Exponential Riordan array (e^(mx),x*A000108(x)), m=2.at n=51A185947
• a(n) is the genus of the modular curve associated to the principal congruence subgroup of level p(n), where p(n) is the n-th prime number.at n=30A191590
• Numbers k such that the product of divisors of sigma(k) is divisible by the product of divisors of k.at n=39A219362
• Number of n X 2 arrays of the minimum value of corresponding elements and their horizontal or antidiagonal neighbors in a random, but sorted with lexicographically nondecreasing rows and columns, 0..2 n X 2 array.at n=31A219621
• a(n) = (n + 1)*(2*n + 1)*(4*n + 9)/3.at n=31A269342
• Numbers k such that product of divisors of k ends with k and k is nonprime (A018252).at n=22A278473
• Pentagonal pyramidal numbers divisible by 3.at n=37A299412
• Non-coreful perfect numbers.at n=5A307888
• Numbers k for which (A057723(k)-k) is equal to gcd(k-A308135(k), A057723(k)-k).at n=11A336565
• Nonexponential multiply-perfect numbers: numbers k such that k | A160135(k).at n=5A348601
• Numbers k such that k divides sigma(A003961(k)), where A003961 is fully multiplicative with a(p) = nextprime(p), and sigma is the sum of divisors function.at n=36A389469