44528

Appears in sequences

• 4-dimensional figurate numbers: a(n) = n*binomial(n+2, 3).at n=21A002417
• Expansion of (1-x)^(-3) * (1-x^2)^(-2).at n=42A002624
• a(n) = C(n+2, 2) + C(n+2, 3) + C(n+2, 4) + C(n+2, 5).at n=21A027660
• Bisection of A002417.at n=10A100431
• Coefficients in quasimodular form F_2(q) of level 1 and weight 6.at n=23A126858
• Row sums of A129394.at n=11A129395
• Number of -n..n arrays x(0..3) of 4 elements with zero sum and nonzero second and third differences.at n=19A200205
• Number of (n+1) X (4+1) 0..2 arrays with every element next to itself plus and minus one within the range 0..2 horizontally or vertically, with no adjacent elements equal.at n=6A232402
• Number of (n+1) X (7+1) 0..2 arrays with every element next to itself plus and minus one within the range 0..2 horizontally or vertically, with no adjacent elements equal.at n=3A232405
• T(n,k)=Number of (n+1)X(k+1) 0..2 arrays with every element next to itself plus and minus one within the range 0..2 horizontally or vertically, with no adjacent elements equal.at n=48A232406
• T(n,k)=Number of (n+1)X(k+1) 0..2 arrays with every element next to itself plus and minus one within the range 0..2 horizontally or vertically, with no adjacent elements equal.at n=51A232406
• 27-gonal pyramidal numbers: a(n) = n*(n+1)*(25*n-22)/6.at n=22A256647
• Numbers that are values of the totient function (A002202) but not of the reduced totient function (A002174).at n=17A270265