164835
domain: N
Appears in sequences
- Number of compositions of n into pairwise relatively prime parts.at n=28A101268
- Number of maximal sum-free subsets of {1,2,...,n}.at n=44A121269
- Number of binary strings of length n with equal numbers of 0001 and 0110 substrings.at n=19A164159
- a(n) = (n-1)*(n+2)*(n^2 + n + 2)/4.at n=27A168566
- Numbers k such that k and k+1 both have an odd number of abundant divisors.at n=12A381548