18638
domain: N
Appears in sequences
- McKay-Thompson series of class 39B for Monster.at n=49A058660
- Denominators of convergents to Pi by Farey fractions.at n=32A063673
- Number of partitions of n that have even-sized Ferrers matrix.at n=39A238945
- a(n) = prime(n+1)^2 - prime(n).at n=31A261465
- Number of odd singletons in all partitions of n (n>=0).at n=35A265257
- Partial sums of the number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 173", based on the 5-celled von Neumann neighborhood.at n=29A270467
- Partial sums of the number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 238", based on the 5-celled von Neumann neighborhood.at n=37A270986
- Solution of the complementary equation a(n) = a(n-1) + a(n-2) + n*b(n), where a(0) = 1, a(1) = 4, b(0) = 2, b(1) = 3, b(2) = 5, and (a(n)) and (b(n)) are increasing complementary sequences.at n=14A296295
- Numbers that can be written in exactly two different ways in the form described by A387302.at n=6A387898