50730

Appears in sequences

• Alkane (or paraffin) numbers l(7,n).at n=37A005994
• a(n) = n*(n-1)*(2*n^2 + 1)/6.at n=20A071245
• Numbers k such that prime(k) +/- k and prime(k) +/- 2k are all primes.at n=11A112530
• Number of non-equivalent binary n X n matrices with two nonadjacent 1's.at n=29A232567
• Numbers k such that the sum of the proper divisors of k that have the same binary weight as k is larger than k, and no subset of these divisors sums to k.at n=28A381071