36585
domain: N
Appears in sequences
- Number of 5-dimensional polyominoes with n cells.at n=8A006768
- Triangle T(n,d) = number of distinct d-dimensional polyominoes (or polycubes) with n cells (0 < d < n).at n=32A049429
- Triangle read by rows: T(n,d) is the number of distinct properly d-dimensional polyominoes (or polycubes) with n cells (n >= 1, d >= 0).at n=41A049430
- Triangular numbers with property that digits alternate in parity.at n=36A068882
- Smaller of the two successive triangular numbers which differ in the use of only one digit.at n=42A077759
- a(n) = p(n)*(p(n)-1)/2 where p(n) = upper member of n-th pair of twin primes.at n=17A082669
- Triangular numbers for which the sum of the digits is a cube.at n=12A117803
- Triangular numbers t which are average of two consecutive primes p and p+4.at n=28A129752
- The positions of zeros in A163898 and A163899.at n=40A165403
- Triangular numbers T from A000217 such that (4*T+1)/13 is prime.at n=14A208294
- Triangular numbers which are an average of four consecutive primes.at n=24A226196
- Number of ways to choose two points on a centered hexagonal grid of size n.at n=9A241219
- Number of length-n restricted growth strings (RGS) with growth <= eight and fixed first element.at n=5A305968
- Number of nXn 0..1 arrays with every element unequal to 0, 1, 2, 3, 5 or 8 king-move adjacent elements, with upper left element zero.at n=4A316203
- Number of nX5 0..1 arrays with every element unequal to 0, 1, 2, 3, 5 or 8 king-move adjacent elements, with upper left element zero.at n=4A316206
- T(n,k)=Number of nXk 0..1 arrays with every element unequal to 0, 1, 2, 3, 5 or 8 king-move adjacent elements, with upper left element zero.at n=40A316209
- Triangular numbers whose sum of divisors is an oblong number.at n=13A317478