26910

Appears in sequences

• a(0) = 1, a(n) = 28*n^2 + 2 for n>0.at n=31A010018
• "DHK[ 5 ]" (bracelet, identity, unlabeled, 5 parts) transform of 1,1,1,1,...at n=45A032246
• Numerators of continued fraction convergents to sqrt(896).at n=5A042732
• Denominators of successive convergents to tan(1/2) using continued fraction 1/(2-1/(6-1/(10-1/(14-1/(18-1/(22-1/(26-1/30-...))))))).at n=4A053988
• Row 3 of A007754.at n=28A058794
• a(n) = lcm(n, n+1, n+2, n+3, n+4) / 60.at n=22A067048
• Moebius transform of binomial(n+3, 4).at n=26A117109
• a(n) = n^3 - 3*n.at n=30A121670
• Expansion of chi(q)^3 / chi(q^3) in powers of q where chi() is a Ramanujan theta function.at n=47A132972
• a(n) = area of Pythagorean triangle with hypotenuse p, where p = A002144(n) = n-th prime == 1 (mod 4).at n=32A145010
• The 3rd Witt transform of A000027.at n=25A147611
• 6 times octagonal numbers: a(n) = 6*n*(3*n-2).at n=39A153796
• Numbers n such that 6n and 12n are both the average of twin prime pairs.at n=35A177680
• Numbers k which use half of the ten digits such that they have at least one factorization k=p*q that uses remaining half of the digits that are not in k.at n=10A195814
• Numbers n = p * q, where n, p, and q together contain all 10 digits at least once.at n=13A253172
• Values n, where n = p * q, and n, p, and q together contain all 10 digits at least once, and no digit is in more than one of n, p or q.at n=10A253173
• Triples of practical numbers: numbers n such that n-2, n, n+2 are all practical numbers.at n=31A287682
• Union_{odd primes p, n >= 3} {T_p(n)}, where T_m(x) = x*T_{m-1}(x) - T_{m-2}(x), m >= 2, T_0(x) = 2, T_1(x) = x (dilated Chebyshev polynomials of the first kind).at n=30A299071
• Triangle T(n, k) read by rows, n > 0 and 0 < k <= 3^(n-1): T(n, k) = A321768(n, k) * A321769(n, k) / 2.at n=24A322170
• Numbers k such that there are exactly five biquadratefree powerful numbers (A338325) between k^2 and (k+1)^2.at n=4A338392