24320

Appears in sequences

• Values of phi(k) when phi(k) = phi(k+1).at n=27A003275
• Expansion of log(1+sin(x))/cos(x).at n=9A009335
• Dimensions of multiples of minimal representation of complex Lie algebra E7.at n=3A030649
• "DHK" (bracelet, identity, unlabeled) transform of 1,2,3,4,...at n=14A032254
• a(n) = phi(n^3 + n^2 + n + 1).at n=39A066792
• a(1) = 4; a(n) = smallest composite number greater than the sum of all previous terms.at n=13A070232
• a(n) = 3*n^3 + n^2 - 4*n.at n=20A083127
• n*(n-1)*(n^2-n+4)/6.at n=20A103290
• a(n) = 16*n*(n+2).at n=38A114444
• Dimensions of the irreducible representations of the simple Lie algebra of type E7 over the complex numbers, listed in increasing order.at n=9A121736
• Ratio of quadruple Sum of k^2-1 to quadruple sum of k made into an integer sequence: (1/6)*(-1 + n)*(2 + n)*(3 + n)*(7 + n).at n=16A130863
• Riordan array [sech(x), arcsin(tanh(x))].at n=46A147308
• Riordan array [sec(x), log(sec(x) + tan(x))].at n=46A147309
• Riordan array [1, arcsin(tanh(x))].at n=57A147311
• Riordan array [1,log(sec(x)+tan(x))].at n=57A147312
• A symmetrical triangle sequence made from A154537:q(x,n)= Sum[(2*m + 1)^n*x^m/m!, {m, 0, Infinity}]/(Exp[x]); p(x,n)=q(x,n)+x^n*q(1/x,n); t(n,m)=coefficients(p(x,n)).at n=24A154923
• Triangle T(n,k)= binomial(n + k,n) + binomial(2*n-k,n) read by rows.at n=46A171824
• Triangle T(n,k)= binomial(n + k,n) + binomial(2*n-k,n) read by rows.at n=53A171824
• Numbers of the form p^8*q*r where p, q, and r are distinct primes.at n=15A179747
• Triangle read by rows: T(n,k) is the number of cycle-up-down permutations of {1,2,...,n} having k excedances (0<=k<=floor(n/2)).at n=29A186368