149384

Appears in sequences

• Solution of the complementary equation a(n) = a(n-1) + a(n-2) + 2*b(n-1) + 2*b(n-2), where a(0) = 1, a(1) = 2, b(0) = 3, and (a(n)) and (b(n)) are increasing complementary sequences.at n=19A294560
• Number of partitions of n with up to seven distinct kinds of 1.at n=34A320694
• Number of compositions (ordered partitions) of n into distinct parts, the least being 2.at n=42A339163
• a(n) is the number of axially symmetric tilings of the order-n Aztec Diamond by square tetrominoes and Z-shaped tetrominoes, not counting rotations and reflections as distinct.at n=8A343595