30025
domain: N
Appears in sequences
- Pseudoprimes to base 7.at n=38A005938
- Numbers k such that the continued fraction for sqrt(k) has period 49.at n=37A020388
- Numbers k such that the continued fraction for sqrt(k) has odd period and if the last term of the periodic part is deleted the two central terms are both 16.at n=17A031604
- Numbers k that divide 3^k + 2^k.at n=15A045576
- Numbers k that divide 6^k + 4^k.at n=37A045591
- a(n) = n*(2*n^2 - 2*n + 1).at n=25A059722
- a(n) = A063997(n)/4.at n=37A088406
- Riordan array (f(x), x*f(x)) where f(x) is the g.f. of A126931.at n=38A171509
- Number of -n..n circular arrays x(0..5) of 6 elements with zero sums of x(i) and x(i)*x((i+1) mod 6).at n=11A202008
- Let x(0)x(1)x(2)... x(q) denote the decimal expansion of n. Sequence lists the numbers n such that the suffix of decimal expansion x(1)x(2)... x(q) is the x(0)-th divisor of n.at n=33A234314
- Pseudoprimes to base 7 that are not squarefree.at n=9A243089
- Numbers k such that A248891(k) = 2.at n=24A248902
- Positions of pandigital 10-digit numbers after the decimal point in the decimal expansion of Pi.at n=15A280183
- Numbers k such that (598*10^k - 31)/9 is prime.at n=22A281991
- Sum of the squarefree parts of the partitions of n into 10 parts.at n=34A309486