67108868

Appears in sequences

• Average theta series of odd unimodular lattices of dimension 18 (multiplied by 1385).at n=4A029819
• Bitwise XOR of adjacent terms of A101120; also the nonzero terms of A101122.at n=23A101121
• a(n) = A102371(n) + n. Or, 2*A103745.at n=26A105024
• Triangle read by rows: T(n,k) = n*(1+n^k)/2, 0<=k<=n.at n=44A108396
• a(n) = n*(1 + n^n)/2.at n=8A108398
• a(n) = 2^n + 4.at n=26A140504
• a(0) = 4; for n >= 1, a(n) = 2^n + 4.at n=26A146528
• a(n) = n*(n^8+1)/2.at n=8A168116
• a(n) = 4^n + 4.at n=13A178675
• a(n) = A048675(A285317(n)).at n=10A285318
• Numbers whose binary indices are all powers of 3, where a binary index of n (row n of A048793) is any position of a 1 in its reversed binary expansion.at n=10A368531