67304
domain: N
Appears in sequences
- Nearest integer to Gamma(n + 1/2)/Gamma(1/2).at n=9A020045
- Ceiling of Gamma(n+1/2)/Gamma(1/2).at n=9A020135
- Smallest n-aspiring number. That is, a(n) = smallest k such that s^(n)(k) is perfect but s^(n-1)(k) is not, where s(k) is the sum of the aliquot parts of k and s^(i) means iterate s i times.at n=25A099771
- Number of nondecreasing integer sequences of length 7 with sum zero and sum of absolute values 2n.at n=30A158141
- Consider a non-palindromic number of k digits n = d_(k)*10^(k-1) + d_(k-1)*10^(k-2) + … + d_(2)*10 + d_(1). Sequence lists the numbers n such that Sum_{i=1..k-1}{phi(Sum_{j=1..i}{d_(j)*10^(j-1)})} = Sum_{i=1..k-1}{phi(Sum_{j=1..i}{d_(k-j+1)*10^(i-j)})} (see example below).at n=47A241503
- a(n) = (A242804(n)-9)/12.at n=6A257044