49155
domain: N
Appears in sequences
- New record highs reached in A060000.at n=17A060013
- Triangle read by rows: T(n,k) is the number of partitions of the set {1,2,...,n}, having exactly k blocks consisting only even entries (0<=k<=floor(n/2)).at n=39A124422
- a(n) is the number whose binary representation is A138144(n).at n=15A147595
- a(n) = (4*n^3 + n^2 - 3*n)/2.at n=29A172073
- Number of n X 6 arrays of the minimum value of corresponding elements and their horizontal or diagonal neighbors in a random, but sorted with lexicographically nondecreasing rows and nonincreasing columns, 0..1 n X 6 array.at n=19A220030
- Numbers n such that m + (sum of digits in base-4 representation of m) = n has exactly three solutions.at n=8A230635
- Total number of corners in all partitions of n. A corner of a partition is a point of degree two in the corresponding Ferrers diagram.at n=30A265258
- Numbers k such that s(k) = s(k+1) but phi(k) != phi(k+1), where s(k) = phi(k) + phi(phi(k)) + ... + 1 is the sum of iterated phi (A092693).at n=19A291177
- Number of rooted trees with n nodes in which all positive outdegrees are the same.at n=45A298422
- a(0)=4; if n > 0 is even then a(n) = 2^(n/2+1)+3, otherwise a(n) = 3*(2^((n-1)/2)+1).at n=29A343177