60231
domain: N
Appears in sequences
- Numbers k such that k through k+4 all have the same number of divisors.at n=11A049051
- Number of (n+1)X(2+1) 0..2 arrays with 2X2 subblock sum of squares lexicographically nondecreasing rowwise and nonincreasing columnwise.at n=2A235418
- T(n,k)=Number of (n+1)X(k+1) 0..2 arrays with 2X2 subblock sum of squares lexicographically nondecreasing rowwise and nonincreasing columnwise.at n=8A235421
- Number of (3+1)X(n+1) 0..2 arrays with 2X2 subblock sum of squares lexicographically nondecreasing rowwise and nonincreasing columnwise.at n=1A235423
- Expansion of Product_{k>=1} ((1+x^(3*k-1))*(1+x^(3*k-2)))^k.at n=44A262884