117181

Appears in sequences

• a(n) = (6^(n+1) - (-5)^(n+1))/11.at n=7A053430
• Diagonal of square array A081297.at n=5A081300
• Numbers that are both centered triangular and centered pentagonal.at n=3A131751
• Numbers k such that k and k^2 use only the digits 1, 3, 6, 7 and 8.at n=14A137038
• Number of arrays of 5 integers in -n..n with sum zero and equal numbers of elements greater than zero and less than zero.at n=17A201813
• Composite numbers k of the form 4u+1 for which the odd part of phi(k) divides k-1.at n=37A339870
• Centered pentagonal numbers which are products of three distinct primes.at n=39A364610