999936

Appears in sequences

• Number of 2 X 2 matrices with entries mod n and nonzero determinant.at n=31A005353
• Maximum value seen in the final n decimal digits of 2^j for all values of j.at n=5A060458
• Monotonic ordering of nonnegative differences 10^i-4^j, for 40>=i>=0, j>=0.at n=34A192172
• Triangle read by rows: T(n,k) = A239672(n)/(A239672(k) * A239672(n-k)).at n=17A255915
• Triangle read by rows: T(n,k) = A239672(n)/(A239672(k) * A239672(n-k)).at n=18A255915
• a(n) is the last term of the analogous sequence to A121805, but with initial term n, or -1 if that sequence is infinite.at n=9A330129
• a(n) is the last term of the analogous sequence to A121805, but with initial term n, or -1 if that sequence is infinite.at n=10A330129
• a(n) is the last term of the analogous sequence to A121805, but with initial term n, or -1 if that sequence is infinite.at n=22A330129
• Triangular array read by rows: T(n,k) is the number of periodic n X n matrices over GF(2) having rank k, n>=0, 0<=k<=n.at n=23A348622
• Numbers without comma-successors: these are the numbers k such that if the commas sequence A121805 is started at k instead of 1, there is no second term.at n=34A367341