61810domain: NAppears in sequencesAlkane (or paraffin) numbers l(7,n).at n=39A005994a(n) = n*(n-1)*(2*n^2 + 1)/6.at n=21A071245Numbers k such that 2^k - 11 is prime.at n=16A096817Number of n-element subsets of [n+4] having an even sum.at n=39A282080Weird untouchable numbers.at n=29A357326