116688

Appears in sequences

• Theta series of D_13 lattice.at n=3A022044
• Theta series of D*_13 lattice.at n=24A022066
• Numbers k such that k and 7*k are anagrams.at n=14A023091
• Distinct even elements in 3-Pascal triangle A028262 (by row).at n=45A028269
• Even elements to right of central elements in 3-Pascal triangle A028262.at n=32A028273
• Distinct even numbers in writing numerators of each element to the right of the central elements of the 1/5-Pascal triangle (by row).at n=42A046629
• (Terms in A029617)/2.at n=46A051432
• Partial sums of A050483.at n=10A052181
• Numbers that are divisible by all of their 1 and 2 digit substrings.at n=37A063527
• Triangle read by rows: T(n, k) = binomial(2*n, k-1)*binomial(2*n-k-1, n-k)/n for n, k >= 1, and T(n, 0) = 0^n.at n=49A094385
• Number of irregular primes less than 2^n.at n=21A105456
• Denominator of the polynomial A_l(x) = sum_{d=1..l-1} x^(l-d)/d for index l=2n+1 evaluated at x=3.at n=8A145614
• a(n) = C(2n-1,n) + C(2n+1,n+1) - C(0,n).at n=9A165205
• Number of 3-step one or two collinear space at a time queen's tours on an n X n board summed over all starting positions.at n=23A187028
• Denominators of the sum of the reciprocals of the Collatz (3x+1) sequence beginning at n.at n=17A225784
• Borel's triangle read by rows: T(n,k) = Sum_{s=k..n} binomial(s,k)*C(n,s), where C(n,s) is an entry in Catalan's triangle A009766.at n=41A234950
• Denominator of Sum_{i=1..n} n^i/i.at n=18A237873
• a(n) = 6*binomial(n+1,7).at n=10A253947
• Number of ways of writing n as a sum of 13 squares.at n=6A276285
• a(n) = (4/45)*n*(n - 2)*(n - 1)*(n^3 - 12*n^2 + 47*n - 15).at n=13A319577