245024
domain: N
Appears in sequences
- a(n) = (2*n+1)*(n+1)*(2*n^2+3*n-1).at n=15A123197
- Integers k such that k and k+1 are products of 8 primes.at n=5A268469
- Numbers k such that k and k+1 are both half-Zumkeller numbers (A246198).at n=25A331371
- Numbers k such that k and k+1 are both in A357605.at n=7A357608
- a(n) is the index of the smallest square pyramidal number divisible by exactly n square pyramidal numbers.at n=23A359095
- Numbers k such that k and k+1 are both S-abundant numbers (A181487).at n=22A364861
- Numbers k such that k | A377484(k) and (k+1) | A377484(k+1).at n=1A377949