25722

Appears in sequences

• Let [n] = {1,2,...,n}. Let G_n be the union of all closed line segments joining any two elements of [n] X [n] along a vertical or horizontal line, or along a line with slope +-1. Then a(n) = combined total of the number of (nondegenerate) triangles and rectangles for which all edges are subsets of G_n.at n=12A098921
• Number of partitions of n with at most 2 odd parts.at n=52A100835
• Detour index of the n-Apollonian network.at n=3A297027
• Triangle read by rows: T(n,k) is the number of perfect matchings on {1, 2, ..., 2n} with k disjoint strings of adjacent short pairs.at n=30A334059
• Number of integer partitions of 2n with reverse-alternating sum -2.at n=28A344741
• Consecutive internal states of the linear congruential pseudo-random number generator (171*s + 11213) mod 53125 when started at 1.at n=17A385039