24479

Appears in sequences

• Composite k such that (k+1) * Sum_{d|k} d/sigma(d) is an integer.at n=14A068975
• Prime(n)*prime(2*n)+prime(n)+prime(2*n).at n=25A072672
• Numbers k such that either k or k+1 is divisible by the numbers from 1 to 10.at n=37A131663
• Partial sums of the squares of Lucas numbers (A000032).at n=10A216243
• T(n,k)=Number of nXk 0..1 arrays with every 1 horizontally, diagonally or antidiagonally adjacent to 1, 2 or 3 neighboring 1s.at n=37A297654
• Number of 2Xn 0..1 arrays with every 1 horizontally, diagonally or antidiagonally adjacent to 1, 2 or 3 neighboring 1s.at n=7A297655
• Number of non-equivalent ways under symmetry in one axis that 2 non-attacking kings of different colors can be placed on an n X n board.at n=14A357740
• a(n) = Lucas(n) + 3.at n=20A366506
• Number of integer compositions of n whose maximal runs R all satisfy length(R) >= first(R).at n=28A389509