46487

Appears in sequences

• Numbers n such that n divides the (left) concatenation of all numbers <= n written in base 22 (most significant digit on right and removing all least significant zeros before concatenation).at n=14A029539
• Numbers k such that k!!! + 1 is prime (0 is included by convention).at n=44A037083
• G.f.: A(x) = exp( Sum_{n>=1} A056045(n)/n*x^n ), where A056045(n) = Sum_{d|n} binomial(n,d).at n=20A110448
• a(n) = ((7 + sqrt(8))^n + (7 - sqrt(8))^n)/2.at n=5A147689
• Number of planar triangular n X n X n nonnegative integer grids with mirror symmetry about one altitude with every similarly oriented 5 X 5 X 5 subtriangle summing to 10.at n=5A154081
• Triangle read by rows related to enumeration of permutations avoiding certain patterns.at n=47A220860