105995

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=43A000447
• Dodecahedral numbers: a(n) = n*(3*n - 1)*(3*n - 2)/2.at n=29A006566
• Odd tetrahedral numbers: a(n) = (4*n+1)*(4*n+2)*(4*n+3)/6.at n=21A015219
• Binomial coefficients C(n,84).at n=3A017748
• Binomial coefficients C(87,n).at n=3A017803
• (prime(n)-5)(prime(n)-7)(prime(n)-9)/48.at n=38A030002
• Squarefree tetrahedral numbers.at n=25A070755
• Tetrahedral numbers n*(n+1)*(n+2)/6 with n, n+1 and n+2 nonprime.at n=26A152622
• Sequence related to Hankel transform of super-ballot numbers.at n=41A156126
• Number of nX6 0..1 arrays with rows and antidiagonals unimodal.at n=3A223678
• T(n,k)=Number of nXk 0..1 arrays with rows and antidiagonals unimodal.at n=39A223680
• Number of 4 X n 0..1 arrays with rows and antidiagonals unimodal.at n=5A223682
• 28-gonal pyramidal numbers: a(n) = n*(n+1)*(26*n-23)/6.at n=29A256648
• a(n) = (5*n + 5)*(5*n + 6)*(5*n + 7)/6.at n=16A300523
• Tetrahedral numbers that are not divisible by any smaller tetrahedral number except 1.at n=22A318701
• a(n) = A000292(6*n + 1) where A000292 are the tetrahedral numbers.at n=14A349682
• Tetrahedral (or triangular pyramidal) numbers which are products of four distinct primes.at n=10A353027
• Number of unlabeled endofunctions on n points whose self-referencing elements are mapped from another element.at n=13A381123