52394
domain: N
Appears in sequences
- a(n) = 1^2 + 3^2 + 5^2 + 7^2 + ... + (2*n-1)^2 = n*(4*n^2 - 1)/3.at n=34A000447
- Dodecahedral numbers: a(n) = n*(3*n - 1)*(3*n - 2)/2.at n=23A006566
- Binomial coefficients C(n,66).at n=3A017730
- Binomial coefficients C(69,n).at n=3A017785
- a(n) = (prime(n) - 1)*(prime(n) - 3)*(prime(n) - 5)/48.at n=32A030004
- Squarefree tetrahedral numbers.at n=21A070755
- Antidiagonal sums in A101321.at n=33A101338
- First element of first run of exactly n consecutive numbers not of form x^2+y^2.at n=23A104271
- Tetrahedral numbers k*(k+1)*(k+2)/6 such that exactly one of k, k+1, and k+2 is prime.at n=38A144521
- Sequence related to Hankel transform of super-ballot numbers.at n=32A156126
- Greedy-summable tetrahedral numbers.at n=39A242291
- Smallest term of the first run of at least n consecutive integers which are not sums of 2 squares.at n=23A260157
- a(n) = (32*n^3 - 2*n)/3.at n=17A267031
- Let n be even; m = n/2 and p a prime such that p<=m with n-p nonprime. The sequence contains the successive positive maxima of values n with L = primepi(m-1)-primepi(p+1)> 0.at n=17A293858
- Tetrahedral numbers that are not divisible by any smaller tetrahedral number except 1.at n=18A318701
- a(n) = A000292(6*n + 1) where A000292 are the tetrahedral numbers.at n=11A349682
- Tetrahedral (or triangular pyramidal) numbers which are products of four distinct primes.at n=7A353027