10871635968
domain: N
Appears in sequences
- Dan numbers: numbers m of the form 2^j * 3^k such that m +- 1 are twin primes.at n=18A027856
- Duplicate of A027856.at n=18A059961
- Number of plane binary trees of size n+3 and contracted height n.at n=25A074092
- a(n) = n^2*8^n.at n=9A128787
- a(n) = 648 * n^6.at n=16A185270
- a(n) = Product_{k=1..n} d(2*k - 1), where d() is the number of divisors function A000005.at n=24A334764
- a(n) is the least number of the form p^2 + q^2 - 2 for primes p and q that is an odd multiple of 2^n, or -1 if there is no such number.at n=27A359439
- 4-full numbers (A036967) sandwiched between twin primes.at n=10A360841