220176
domain: N
Appears in sequences
- E.g.f. L(x) satisfies: L(x) = x*exp(x*d/dx L(x)), where L(x) is the logarithm of e.g.f. of A161967.at n=5A161968
- Number of ways two L-tiles (with rotation) can be placed on an n X n square.at n=13A348134
- Primitive terms of A388022: numbers k that satisfy sigma(k) AND 3*k = 3*k, but none of whose proper divisors satisfy the same condition.at n=34A388025