38178

Appears in sequences

• Numbers k such that sopf(k) = sopf(k+2), where sopf(k) = A008472(k).at n=28A063968
• The number of 3D walks of length n in an octant returning to axis of origin.at n=9A302179
• a(n) is the smallest positive integer which can be represented as the sum of distinct nonzero n-gonal pyramidal numbers in exactly n ways, or 0 if no such integer exists.at n=17A350210
• E.g.f. satisfies A(x) = x * exp( -A(x) + x * exp(-A(x)) ).at n=7A360442