43262

Appears in sequences

• Length of n-th term of A022470.at n=37A022471
• Number of binary rooted trees with n nodes and height exactly 11.at n=19A036600
• Number of basis partitions of n+49 with Durfee square size 7.at n=31A053802
• Numbers k such that sigma(k) and phi(k) are both palindromes.at n=11A113929
• Number of 0..4 arrays of length n with each element unequal to at least one neighbor, with new values introduced in 0..4 order.at n=9A221455
• Smallest even number k such that lpf(k-3) = prime(n) while lpf(k-1) > lpf(k-3), where lpf=least prime factor (A020639).at n=40A242490
• Partial sums of the number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 417", based on the 5-celled von Neumann neighborhood.at n=42A272018
• a(n) = Sum_{k=0..n} binomial((n-k)*k, k).at n=9A295772
• Even composite positive integers m such that A052918(m-1)^2 == 1 (mod m).at n=19A338313
• a(n) = 2*a(n-1) + a(n-2) - 1, with a(0) = 0 and a(1) = 2.at n=13A353580