120213

Appears in sequences

• Number of ternary codes of length 4 with n words.at n=7A034216
• Number of ternary codes (not necessarily linear) of length n with 7 words.at n=3A034227
• The number of lit cells in weakly decreasing partitions of n when light shines from the north west and only the first column is lit. Here partitions are represented from left to right by columns of cells.at n=35A366175
• Nonmultiples of 10 that are divisible by the square of the sum of the squares of their digits.at n=12A379982
• a(n) = n*(n + 1)*(n^2 + 17*n + 54)/24.at n=37A387204