18337
domain: N
Appears in sequences
- Members of A000124 which are multiples of 11.at n=34A083511
- Counterexamples to the conjecture that an even, prime-indexed triangular plus 1 equals a prime or that an odd, prime-indexed triangular minus 2 equals a prime.at n=15A097785
- a(n) = (p-1)! mod p^2 where p = n-th prime.at n=39A112660
- a(n) = (prime(n)^2 + prime(n+1))/2.at n=41A140511
- a(n) = 2^(n-1) - A190820(n).at n=14A191342
- Principal diagonal of the convolution array A213551.at n=9A213552
- Main diagonal of Unlucky array: a(n) = A255543(n,n).at n=24A255549
- Number of length 3 1..(n+2) arrays with no leading partial sum equal to a prime and no consecutive values equal.at n=34A255718
- Positive integers m such that 2*m^2 - 1 = x^4 + y^4 for some nonnegative integers x and y with |x - y| > 1.at n=6A343913
- Record values in A356640.at n=14A356642