69983

Appears in sequences

• Number of terms in s(n), where s(n) is defined in A114483.at n=18A112361
• a(n) = 54*n^2 - 1.at n=35A158656
• Numbers k such that 6^7 + k^2 is a square.at n=23A180971
• Increasing sequence S generated by these rules: a(1)=1, and if x is in S then both 3x+2 and 4x+3 are in S.at n=44A191145
• a(n) = 9*6^n - 1.at n=5A198846
• One-half of the number of lines through at least 2 points of an n X n grid of points.at n=28A331780
• Number of partitions of n in which the number of prime parts is not equal to the number of nonprime parts.at n=44A355306
• Triangle read by rows: T(n,k) is the number of simple connected graphs on n unlabeled nodes with k cycles and no node a member of more than one cycle, 0 <= k <= floor(n/3).at n=48A381467