57342

Appears in sequences

• a(n) = Sum_{k=0..n} A026615(n, k).at n=15A026622
• Multiples of 3018.at n=18A086746
• a(0)=1, a(1)=2, a(2)=1; for n>2, a(n) = 7*2^(n-3)-2.at n=16A174317
• a(n) = 7*2^n - 2.at n=13A176448
• Number of subsets A of {0,1,...,n-1} with |A+A| < |A-A|.at n=15A222808
• Solution of the complementary equation a(n) = a(n-1) + a(n-2) + b(n), where a(0) = 1, a(1) = 2, b(0) = 3, b(1) = 4, b(2) = 5, and (a(n)) and (b(n)) are increasing complementary sequences.at n=19A295949
• Numbers x such that sigma(x) = sigma(y), with x<>y, where y is the 10's complement mod 10 of the digits of x.at n=25A300447
• Index of first occurrence of -n in A000319, or -1 if -n never appears there.at n=26A381231