18384

Appears in sequences

• Generalized Fibonacci numbers D_{n,2}.at n=14A006210
• Floor((e/2)^n).at n=32A014213
• McKay-Thompson series of class 27b for the Monster group.at n=32A058601
• Number of partitions of n with even number (or 0) 2's.at n=39A092295
• Number of 8k+7 primes (A007522) in range ]2^n,2^(n+1)].at n=19A095012
• Number of 2 X 2 matrices with all terms in {0,1,...,n} and (sum of terms) = n + 3.at n=43A210375
• a(n) = n*B(n-1) + n*(n-1)*B(n-2), where the B(i) are Bell numbers (A000110).at n=8A226855
• Number of partitions p of n such that if h = min(p), then h is an (h,0)-separator of p; see Comments.at n=52A239510
• Number of length n+3 0..5 arrays with some pair in every consecutive four terms totalling exactly 5.at n=2A245947
• T(n,k)=Number of length n+3 0..k arrays with some pair in every consecutive four terms totalling exactly k.at n=23A245950
• Number of length 3+3 0..n arrays with some pair in every consecutive four terms totalling exactly n.at n=4A245953
• Number of n X n 0..2 arrays with some element plus some horizontally, diagonally or antidiagonally adjacent neighbor totalling two exactly once.at n=3A269029
• Number of n X 4 0..2 arrays with some element plus some horizontally, diagonally or antidiagonally adjacent neighbor totalling two exactly once.at n=3A269031
• T(n,k)=Number of nXk 0..2 arrays with some element plus some horizontally, diagonally or antidiagonally adjacent neighbor totalling two exactly once.at n=24A269035
• Number of 4Xn 0..2 arrays with some element plus some horizontally, diagonally or antidiagonally adjacent neighbor totalling two exactly once.at n=3A269038
• Number of ways to split an integer partition of n into consecutive subsequences with weakly decreasing sums.at n=18A316245
• G.f.: Sum_{n>=0} (n+1)*(n+2)/2 * x^n * (1 + x^n)^n.at n=62A326003
• Number of strictly recursively normal integer partitions of n.at n=42A330937
• a(n) = Sum_{k=1..n} mu(k) * (floor(n/k)^4 - floor((n-1)/k)^4).at n=17A344597
• Number of permutations p of [n] such that max(|p(p(i)) - i|)=1.at n=9A364819