73926

Appears in sequences

• 3-magic series constant.at n=5A052460
• Partial sums of n 3-spaced triangular numbers beginning with t(3), e.g., a(2) = t(3)+t(6) = 6+21 = 27.at n=35A085788
• a(n) = 2*n*A071148(n).at n=26A177082
• Upper Pythagorean twins.at n=29A228877
• a(n) is the smallest even k >= 2 such that the first n multiples of k have the same sum of digits, but (n + 1)*k has a different one. a(n) = 0 if no such k exists.at n=26A237994
• a(n) is the smallest k > 0 such that the first n multiples of k have the same sum of digits, but (n+1)k has a different one. a(n)=0 if no such k exists.at n=26A238088
• a(n) = 2*(10^n - 1)^2/27.at n=3A271528