77185

Appears in sequences

• Square pyramorphic numbers: integers m such that the sum of the first m squares (A000330) ends in m.at n=32A093534
• Number of isomorphism classes of simple quadrangulations of the sphere having n vertices and n-2 faces, with orientation-reversing isomorphisms permitted.at n=11A113201
• a(n) = a(n-1) + a(n-2) + 2 a([(n-1)/2]), where a(0) = 1, a(1) = 2, a(2) = 3.at n=20A298355