31441
domain: N
Appears in sequences
- Sum of the squares of the first n nonsquarefree numbers (A013929).at n=23A111732
- Expansion of g.f. x*(1 +4*x +4*x^2 +18*x^3 +7*x^4 +7*x^5 -2*x^6 -x^7 -x^8 -x^9) / (1-20*x^6+x^12).at n=20A116561
- Expansion of g.f. x*(1 +4*x +4*x^2 +18*x^3 +7*x^4 +7*x^5 -2*x^6 -x^7 -x^8 -x^9) / (1-20*x^6+x^12).at n=21A116561
- a(n) = 18*a(n-1) - 79*a(n-2) for n > 1; a(0) = 1, a(1) = 17.at n=4A164600
- The non-common part of the smaller number of an amicable pair.at n=28A180326
- Numbers m such that 11*m^2 - 7 is a square.at n=7A221763
- Consecutive states of the linear congruential pseudo-random number generator for 16-bit WATFOR/WATFIV when started at 1.at n=36A384158