37820

Appears in sequences

• Sum of the first n even squares: a(n) = 2*n*(n+1)*(2*n+1)/3.at n=30A002492
• Binomial coefficients C(n,59).at n=3A017723
• Binomial coefficients C(62,n).at n=3A017778
• a(n) = (prime(n)-3)*(prime(n)-5)*(prime(n)-7)/48.at n=29A030003
• Smallest Fibonacci number that has n as a factor, divided by n.at n=21A037943
• Denominators of continued fraction convergents to sqrt(605).at n=11A042161
• Number of cyclic subgroups of Chevalley group A_n(4) (the group of nonsingular n X n matrices over GF(4) ).at n=2A062552
• Numbers k such that the period of the continued fraction for sqrt(5)*k is 2.at n=39A065030
• Convolution of generalized Catalan numbers A064062 (called C(n;2)).at n=7A115197
• 1/6 of product of three numbers: n-th prime, previous and following number.at n=17A127920
• Tetrahedral numbers k*(k+1)*(k+2)/6 such that exactly one of k, k+1, and k+2 is prime.at n=34A144521
• Least integer k such that the n-almost prime count is equal to the prime count.at n=3A161170
• Numbers k such that A206369(k) = A206369(k + 1).at n=28A206368
• a(n) = binomial(3*n+2,3).at n=19A228888
• G.f. satisfies: A(x) = Series_Reversion(x - x^2*A'(x)).at n=6A229619
• The least nonsquarefree number on row n of Pascal's triangle, or 1 if all the terms on that row are squarefree.at n=62A249716
• Numbers k such that (266*10^k + 1)/3 is prime.at n=35A269303
• a(n) = (p+1)*(p+2)*(p+3)/6 where p is the n-th prime.at n=16A271512
• Numbers n such that uphi(n) = uphi(n+1), where uphi(n) is the unitary totient function (A047994).at n=37A287055
• a(n) = (5*n + 5)*(5*n + 6)*(5*n + 7)/6.at n=11A300523