142848

Appears in sequences

• a(n) = 441*n^2 - 2*n.at n=17A157737
• Sum of odd divisors of Fibonacci(n).at n=29A193293
• Numbers n such that the digital sum of n is the same as the digital sum of n^2 in both base 2 and base 10.at n=36A261640
• Number of subsets of {2...n} containing no element whose prime indices all belong to the subset.at n=20A324739
• Total number of inversions in all permutations of [n] where the descent set equals the subset of odd elements in [n-1].at n=9A337193
• Numbers k such that A000005(k) = A000688(k).at n=26A369168