34988
domain: N
Appears in sequences
- Expansion of series related to Liouville's Last Theorem: g.f. sum_{t>0} (-1)^(t+1) *x^(t*(t+1)/2) / ( (1-x^t)^4 *product_{i=1..t} (1-x^i) ).at n=30A059821
- Numbers n such that sigma(n) = phi(n) + phi(n-1) + phi(n-2).at n=11A067202
- Number of binary strings of length n with equal numbers of 00001 and 01100 substrings.at n=16A164201
- Partial sums of Sum_{k=1..n} n/gcd(n,k), or partial sums of Sum_{d|n} d*phi(d) (see A057660).at n=51A174405
- G.f.: A(x) = Sum_{n>=0} x^(n*(n+1)/2) / Product_{k=1..n} (1-x^k)^k.at n=34A206138
- Number of (n+1)X(n+1) 0..3 arrays with no 2X2 subblock having its minimum diagonal element less than its minimum antidiagonal element.at n=1A250957
- Number of (n+1)X(2+1) 0..3 arrays with no 2X2 subblock having its minimum diagonal element less than its minimum antidiagonal element.at n=1A250959
- T(n,k)=Number of (n+1)X(k+1) 0..3 arrays with no 2X2 subblock having its minimum diagonal element less than its minimum antidiagonal element.at n=4A250965
- Largest integer with sum of digits n in fractional base 4/3.at n=27A364779