23880
domain: N
Appears in sequences
- a(n) = 20*a(n-1) - a(n-2) with a(0) = 0, a(1) = 3.at n=4A001084
- Denominators of continued fraction convergents to sqrt(11).at n=7A041015
- a(n) = 3*(n - 2)*(5*n -11).at n=40A060785
- Expansion of x/(1-5*x+7*x^2-5*x^3+x^4).at n=9A104630
- Triangle read by rows, coefficients of the Swiss-Knife median polynomials M_{n}(x) in descending order of powers.at n=32A213736
- Number of nonnegative solutions to x^2 + y^2 + z^2 < n^2.at n=35A218711
- Numbers k such that A348215(k) = k.at n=39A348216
- Integers k such that there are i groups of order k+i up to isomorphism, for i=1,2,3.at n=16A373649