84280

Appears in sequences

• a(n) = (n+1)^2*(n+2)*(n+3)*(3*n+4)/24.at n=13A108650
• Number of (n+6)X13 0..1 matrices with each 7X7 subblock idempotent.at n=11A224587
• Sum of all parts of all partitions of n that contain 1 as a part.at n=27A228816
• Numbers k such that 2^k + 31 is prime.at n=7A247952
• Number of distinct proper angles that can be formed by a vertex and two leg endpoints on grid points in an n X n square grid.at n=27A252591
• Number of set partitions of [n] such that all absolute differences between least elements of consecutive blocks and between consecutive elements within the blocks are not larger than six.at n=10A287585
• Numbers m such that the denominator of m/rho(m) is 3, where rho is A206369; i.e. A294649(m) = 3.at n=15A297358
• The number of regions inside a decagon formed by the straight line segments mutually connecting all vertices and all points that divide the sides into n equal parts.at n=3A333139
• Brent's irregular triangle T[r,k] related to Hardy-Littlewood constants of prime gaps 2r.at n=72A381083