665335
domain: N
Appears in sequences
- Numerators of continued fraction convergents to sqrt(21).at n=17A041032
- Numerators of continued fraction convergents to sqrt(84).at n=5A041148
- Numerators of continued fraction convergents to sqrt(189).at n=11A041350
- Numerators of continued fraction convergents to sqrt(336).at n=5A041634
- Numerators of continued fraction convergents to sqrt(756).at n=5A042456
- x such that x^2 - 21*y^2 = 1.at n=3A114049
- "Kaprekar quintuples": digits of X^5 taken D at a time sum to X (where D is number of digits in X.)at n=11A171500
- a(n) = 32*n^3 + 48*n^2 + 18*n + 1.at n=27A322830