24225

Appears in sequences

• 4-dimensional figurate numbers: a(n) = (6*n-2)*binomial(n+2,3)/4.at n=16A002419
• (s(n)+s(n+1))/18, where s()=A006521.at n=26A016060
• Distinct odd elements in 3-Pascal triangle A028262 (by row).at n=46A028268
• Odd elements (greater than 1) to right of central elements in 3-Pascal triangle A028262.at n=44A028274
• Trajectory of 318 under the Reverse and Add! operation carried out in base 4, written in base 10.at n=6A075153
• Antidiagonal sums of number triangle A110197.at n=12A110198
• a(n) = E(k)*C(n+k,k) = Euler(k)*binomial(n+k,k) for k=4.at n=16A154286
• Number of slanted n X 4 (i=1..n) X (j=i..4+i-1) 1..4 arrays with all 1s connected, all 2s connected, all 3s connected, all 4s connected, 1 in the upper left corner, 2 in the upper right corner, 3 in the lower left corner, and 4 in the lower right corner.at n=5A165373
• Number of slanted 7Xn (i=1..7)X(j=i..n+i-1) 1..4 arrays with all 1s connected, all 2s connected, all 3s connected, all 4s connected, 1 in the upper left corner, 2 in the upper right corner, 3 in the lower left corner, and 4 in the lower right corner.at n=2A165390
• Totally multiplicative sequence with a(p) = 8p+1 for prime p.at n=41A166666
• a(n) = smallest k having at least three prime divisors d such that (d + n) | (k + n).at n=29A202158
• Principal diagonal of the convolution array A213838.at n=16A213839
• Numbers n such that the sum of the distinct prime divisors of n that are congruent to 1 mod 4 equals the sum of the distinct prime divisors congruent to 3 mod 4.at n=10A215949
• Triangle T(n,k) represents the coefficients of (x^17*d/dx)^n, where n=1,2,3,...at n=18A223519
• a(n) = binomial(floor(n/2),4) + (ceiling(n/2)-3)*binomial(floor(n/2),3).at n=40A234277
• Number of (n+1) X (7+1) 0..1 arrays with each 2 X 2 subblock having clockwise pattern 0000 0011 or 0101.at n=10A259221
• Alternating sum of 9-gonal (or decagonal) pyramidal numbers.at n=34A269440
• Numbers k that end with ( sum of digits of k )^2.at n=31A270343
• Let p = n-th prime == 3 mod 8; a(n) = sum of quadratic nonresidues mod p that are > p/2.at n=18A282725
• Expansion of x*(1 + 4*x + x^2)/((1 - x)^5*(1 + x)^4).at n=33A290055